Mammatus Bandana Knitting Pattern: A Detailed Guide to the Cloud-Inspired Triangle

The Mammatus Bandana is a delicate knitted accessory with a distinctive triangular silhouette and an airy, decorative stitch pattern inspired by mammatus clouds. Designed by Sys Fredens for Hobbii Design, this project is worked flat on a circular needle and grows gradually from a very small starting square into a wide, wearable bandana.

The construction is one of the most interesting parts of the design. Rather than beginning with the entire width, you cast on only 5 stitches and work 10 rows in garter stitch. Stitches are then picked up along two sides of this small section, creating a 15-stitch foundation. From there, the fabric expands through four increases on the relevant increase rows: one increase at each side and one increase on each side of the middle stitch.

The finished bandana can be worn around the neck or around the head. Its openwork texture gives the fabric a lightweight appearance, while the garter-stitch borders help frame the patterned center.

Project at a Glance

The original pattern is a knitting pattern, not a crochet pattern, and it uses a 3 mm (US 2.5) circular needle measuring 80 cm (32’’). The work is knitted back and forth rather than continuously in the round.

The pattern is available in two sizes, S/M and L/XL. Before washing and blocking, the width is approximately 50 (55) cm / 19.7’’ (21.7’’), while the length is 27 (30) cm / 10.6’’ (11.8’’). After washing and blocking, the width is approximately 60 (65) cm / 23.6’’ (25.6’’), and the length is 33 (36) cm / 13’’ (14.2’’).

The original pattern identifies the design as an intermediate-level knitting project. The main techniques involve casting on, picking up stitches, garter stitch, yarnovers, knitting yarnovers through the back loop, knit-two-together decreases, stitch markers, and repeated increases.

Materials and Yarn Requirements

The specified yarn is Alpaca Silk from Hobbii in the color Vienna (12). The pattern calls for 1 (2) skeins, depending on the selected size.

• Yarn: Alpaca Silk, Hobbii
• Color: Vienna (12)
• Fiber content: 70 % Alpaca, 30 % Mulberry Silk
• Skein weight: 50 g (1.75 oz)
• Yardage per skein: 166 m (182 yds)
• Quantity: 1 (2) skeins
• Needle: Circular needle 3 mm (US 2.5), 80 cm (32’’)
• Stitch markers: 4

The combination of alpaca and mulberry silk is part of the original yarn specification. If you want the project to develop according to the stated gauge and measurements, keep the specified yarn weight and needle size in mind rather than treating the material list as interchangeable.

Gauge and Finished Measurements

The specified gauge is 27 sts x 40 rows in stockinette stitch = 10 cm (4’’).

The available sizes are:

• S/M
• L/XL

Before washing and blocking, the measurements are:

• Width: Approx 50 (55) cm / 19.7’’ (21.7’’)
• Length: 27 (30) cm / 10.6’’ (11.8’’)

After washing and blocking, the measurements are:

• Width: Approx 60 (65) cm / 23.6’’ (25.6’’)
• Length: 33 (36) cm / 13’’ (14.2’’)

These measurements show why the finishing stage matters. The bandana becomes wider and longer after washing and blocking, so the final blocked dimensions should not be confused with the dimensions of the fabric while it is still unblocked.

Knitting Abbreviations

Keeping the pattern abbreviations nearby makes the written instructions easier to follow, especially once you reach the repeating section.

• st(s) = stitch(es)
• k = knit
• p = purl
• tbl = through the back loop
• RS = right side
• WS = wrong side
• inc(s) = increase(s)
• yo(s) = yarnovers
• k2tog = knit 2 stitches together
• co = cast on
• bo = bind off

How the Mammatus Shape Is Built

The shaping is based around four increases. The pattern explains that increases are made by working yarnovers on the WS rows and knitting the yarnovers through the back loop on the RS rows.

The increase points occur around the center and the outer edge sections. This gives the fabric a balanced expansion as the rows become longer. The middle stitch acts as an important reference point throughout the design.

At the beginning, the piece contains only 15 stitches after the initial pickup. The opening rows then increase the count to 19, 23, and 27 stitches. Once the main pattern begins, the checkpoints continue at 31, 35, 39, and 43 stitches.

These stitch counts are useful for confirming that the increase structure is developing correctly. They should be treated as checkpoints alongside the written instructions rather than as substitutes for those instructions.

Step 1: Cast On the Small Edge Section

The project begins with the smallest part of the bandana. Work in the flat on the 80 cm (32’’) circular needle.

Co 5 sts.

Work 10 rows in garter stitch.

At this point, the instructions specifically tell you do not turn. Instead, pull out the cable using the magic loop technique and pick up 5 sts along the left side.

Again, do not turn. Pull out the cable using the magic loop technique and pick up 5 sts along the cast-on edge.

You should now have:

15 sts.

Place the four stitch markers after:

• 5 stitches
• 7 stitches
• 8 stitches
• 10 stitches

The marker placement is important because the later instructions refer to the middle stitch and the marker before the edge stitches. Establishing the markers correctly at the beginning makes the growing piece easier to read.

Step 2: Work the First Six Bandana Rows

The first six rows introduce the increase rhythm used to build the shape.

Row 1 — Wrong Side

Row 1, WS: K5, yo, p2, yo, p1, yo, p2, yo, k5 = 4 yos.

There are four yarnovers in this row. These yarnovers provide the four increases that will be worked on the next RS row.

Row 2 — Right Side

Row 2, RS: K5, k yo tbl, k2, k yo tbl, k1, k yo tbl, k2, k yo tbl, k5 = 19 sts.

After completing Row 2, the checkpoint is 19 stitches.

The yarnovers created on Row 1 are now knitted through the back loop. The five knit stitches at either end continue to form the edge sections.

Row 3 — Wrong Side

Row 3, WS: K5, yo, p4, yo, p1, yo, p4, yo, k5 = 4 yos.

Once again, four yarnovers are introduced.

Row 4 — Right Side

Row 4, RS: K5, k yo tbl, k4, k yo tbl, k1, k yo tbl, k4, k yo tbl, k5 = 23 sts.

The stitch count is now 23 stitches.

Row 5 — Wrong Side

Row 5, WS: K5, yo, p6, yo, p1, yo, p6, yo, k5 = 4 yos.

Row 6 — Right Side

Row 6, RS: K5, k yo tbl, k6, k yo tbl, k1, k yo tbl, k6, k yo tbl, k5 = 27 sts.

The final checkpoint of this opening section is 27 stitches.

From here, the instructions say to work the pattern from the main pattern section.

Step 3: Begin the Main Pattern

The main pattern is written as Rows 1–8. The fabric now contains enough stitches for the decorative repeat to become more pronounced.

The main section continues the four-yarnover increase structure while adding the *yo, k2tog* sequence on the second right-side row. This combination is responsible for much of the open texture visible in the finished bandana.

Main Pattern Row 1

Row 1, WS: K5, yo, p8, yo, p1, yo, p8, yo, k5 = 4 yos.

This row establishes four yarnovers around the central stitch and the two edge sections.

Main Pattern Row 2

Row 2, RS: K5, k yo tbl, repeat *yo, k2tog* until the yo before the middle st, k yo tbl, k1, k yo tbl, repeat *k2tog, yo* until the yo before the edge st, k yo tbl, k5 = 31 sts.

The stitch count after this row is 31 stitches.

This row deserves extra attention because it combines the edge stitches, yarnovers knitted through the back loop, a central stitch, and two directional repeats involving yarnovers and k2tog. Read the complete row before starting it so the transition points are clear.

Main Pattern Row 3

Row 3, WS: K5, yo, k yos and sts until the middle st, yo, p1, yo, k yos and sts until the marker before the edge sts, yo, k5 = 4 yos.

The four yarnovers continue the established increase structure.

Main Pattern Row 4

Row 4, RS: K5, k yo tbl, k until the yo before the middle st, k yo tbl, k1, k yo tbl, k until the yo before the edge sts, k yo tbl, k5 = 35 sts.

After Row 4, the checkpoint is 35 stitches.

Main Pattern Row 5

Row 5, WS: K5, yo, p until the middle st, yo, p1, yo, p until the marker before the edge sts, yo, k5.

The center and the edge sections remain important reference areas as the row grows.

Main Pattern Row 6

Row 6, RS: K5, k yo tbl, k until the yo before the middle st, k yo tbl, k1, k yo tbl, k until the yo before the edge st, k yo tbl, k5 = 39 sts.

The stitch count is now 39 stitches.

Main Pattern Row 7

Row 7, WS: K5, yo, p until the middle st, yo, p1, yo, p until the marker before the edge sts, yo, k5.

This row continues the same shaping framework without a specified final stitch count in the source.

Main Pattern Row 8

Row 8, RS: K5, k yo tbl, k until the yo before the middle st, k yo tbl, k1, k yo tbl, k until the yo before the edge st, k yo tbl, k5 = 43 sts.

The stitch count after Row 8 is 43 stitches.

Understanding the Main Repeat

After completing Main Pattern Rows 1–8, the instructions give a specific repeat sequence:

Repeat rows 1–8 a total of 11 (13) times.

Then:

Repeat rows 1–6.

The first number applies to S/M and the second number applies to L/XL. Keep this size order consistent throughout the project.

Because the main section is repetitive, it is useful to keep a written record of completed eight-row repeats. The most important point is to distinguish a complete eight-row repeat from the individual row number within that repeat.

For example, after finishing Row 8, you have completed one full eight-row sequence. The instructions then require that sequence to be repeated until the specified total of 11 (13) repetitions has been reached. Only after that should you work Rows 1–6 as the final portion of the patterned section.

How the Openwork Pattern Develops

The visual character of the Mammatus Bandana comes from the interaction between yarnovers and k2tog. A yarnover introduces a new stitch and creates an opening, while k2tog combines two stitches. When these operations are positioned according to the written instructions, they create the rows of open texture seen in the finished fabric.

The yarnovers used for increases are handled differently on the two sides of the work. They are created on WS rows and then knitted through the back loop on RS rows. This distinction is fundamental to the pattern.

The decorative sections become more visible as the bandana grows. The photographs of the finished project show repeated lines of openings extending through the triangular fabric, framed by more solid knitted borders.

Using the Stitch Markers as Visual Checkpoints

The four markers are especially helpful because the written instructions repeatedly refer to specific structural locations. They were originally placed after 5, 7, 8 and 10 stitches.

As the work expands, the markers help you locate the center-related sections and the area before the edge stitches. Rather than counting every stitch from the beginning of a long row, you can use these fixed landmarks to divide the row into manageable sections.

The five knit stitches at the beginning and end of many rows are another useful visual checkpoint. If the edge begins to look inconsistent, pause and compare your work with the written row before continuing.

Stitch Count Checkpoints to Watch

The following counts are explicitly provided in the written instructions and make useful progress checks:

• After picking up the stitches: 15 sts
• After Row 2: 19 sts
• After Row 4: 23 sts
• After Row 6: 27 sts
• After Main Pattern Row 2: 31 sts
• After Main Pattern Row 4: 35 sts
• After Main Pattern Row 6: 39 sts
• After Main Pattern Row 8: 43 sts

If your count differs at one of these checkpoints, reviewing the preceding increase row is usually more useful than continuing into several more repeats. Since the pattern grows through repeated increases, an error left uncorrected can affect subsequent rows.

Keeping the Pattern Symmetrical

The Mammatus Bandana is designed around a central stitch and balanced increases. This means symmetry is an important visual characteristic of the finished piece.

When working the right-side rows, pay attention to the position of the middle stitch and the yarnovers immediately around it. The edge sections also provide a useful comparison between the two sides.

If one side appears noticeably different from the other, check the locations of the yarnovers and the stitches worked through the back loop before assuming that the fabric itself is behaving differently.

Do not alter the number of increases to correct an appearance that seems unusual. Follow the written pattern and its specified stitch counts instead.

Step 4: Complete the Final Pattern Section

Once Rows 1–8 have been repeated the required 11 (13) times, the pattern instructs you to repeat Rows 1–6.

This additional six-row section comes immediately before the final edge. It is therefore useful to mark your progress clearly when you finish the last complete eight-row repeat, so you know that the next step is Rows 1–6 rather than another full repeat.

After those six rows are complete, the decorative body section is finished and you can proceed to the edge.

Step 5: Work the Final Edge

The finishing edge is intentionally straightforward compared with the patterned center.

The instructions say:

Work 5 rows in garter stitch (with increases).

The phrase with increases is important. These five rows are not simply five plain rows of garter stitch. Continue with the specified increase structure while working the garter-stitch edge.

After the five edge rows are complete:

BO loosely.

The loose bind-off is part of the original construction. A tight bind-off could restrict the finished edge, so maintain a relaxed tension as you finish the final row.

Washing and Light Blocking

The last instruction is to wash and lightly block the bandana.

This stage has a direct relationship with the finished measurements. The source gives one set of measurements before washing and blocking and another after the fabric has been washed and blocked.

For S/M, the width changes from approximately 50 cm / 19.7’’ before washing and blocking to approximately 60 cm / 23.6’’ afterward. The length changes from 27 cm / 10.6’’ to 33 cm / 13’’.

For L/XL, the width changes from approximately 55 cm / 21.7’’ to approximately 65 cm / 25.6’’, while the length changes from approximately 30 cm / 11.8’’ to approximately 36 cm / 14.2’’.

The pattern specifically calls for the bandana to be blocked lightly. This finishing step allows the knitted fabric to settle into its intended shape without changing the original construction.

What the Finished Shape Should Look Like

The photographs accompanying the pattern provide several useful visual references. One image shows the bandana worn around the neck, where the pointed section hangs toward the front. Another shows it worn around the head, demonstrating how the broad triangular fabric can cover the back and sides.

A separate image displays the entire bandana opened out. This view makes the triangular construction particularly easy to see: the piece expands from the narrow starting point toward its broad outer edge.

The back view shows how the triangular point and decorative rows fall naturally when the bandana is worn as a head covering.

Practical Tips for Working the Pattern

Keep the Four Markers in Place

The markers are not merely optional visual aids. The written instructions use the marker before the edge stitches as a reference point, so keeping them correctly positioned makes the longer rows easier to navigate.

Distinguish RS and WS Rows

The increase method depends on working the correct operation on the correct side. Yarnovers are made on WS rows, and the yarnovers are knitted through the back loop on RS rows.

Read the Repeated Rows Carefully

The main pattern becomes longer as the bandana expands. Before beginning a row, identify the middle stitch, the relevant yarnovers, the edge stitches, and any repeated section such as *yo, k2tog* or *k2tog, yo*.

Use the Stitch Counts

The supplied counts provide convenient opportunities to verify your progress. The progression from 15 to 19, 23, 27, 31, 35, 39, and 43 stitches is especially useful during the early stages.

Do Not Rush the Final Repeat

Once the main eight-row sequence becomes familiar, it can be tempting to work from memory. However, the project requires a precise number of complete repeats followed by Rows 1–6. Keep a written record so that the transition into the final edge occurs at the correct point.

Quick Construction Checklist

1. Prepare 1 (2) skeins of Alpaca Silk in Vienna (12).
2. Use a 3 mm (US 2.5) circular needle measuring 80 cm (32’’).
3. Cast on 5 stitches.
4. Work 10 rows in garter stitch.
5. Do not turn.
6. Pick up 5 stitches along the left side using the magic loop technique.
7. Do not turn.
8. Pick up 5 stitches along the cast-on edge using the magic loop technique.
9. Confirm 15 stitches.
10. Place markers after 5, 7, 8 and 10 stitches.
11. Work the first six bandana rows.
12. Check the 19-, 23-, and 27-stitch checkpoints.
13. Begin the main eight-row pattern.
14. Check the 31-, 35-, 39-, and 43-stitch checkpoints as specified.
15. Repeat Rows 1–8 a total of 11 (13) times.
16. Repeat Rows 1–6.
17. Work 5 rows in garter stitch with increases.
18. Bind off loosely.
19. Wash and lightly block the finished bandana.

Complete Technical Reference

• Designer: Sys Fredens
• Brand: Hobbii Design
• Pattern number: 2004-214-7073
• Project: Mammatus Bandana
• Type: Knitting
• Sizes: S/M (L/XL)
• Yarn: Alpaca Silk, Hobbii
• Fiber: 70 % Alpaca, 30 % Mulberry Silk
• Skein: 50 g (1.75 oz) = 166 m (182 yds)
• Color: Vienna (12)
• Yarn quantity: 1 (2) skeins
• Needle: Circular needle 3 mm (US 2.5), 80 cm (32’’)
• Stitch markers: 4
• Gauge: 27 sts x 40 rows in stockinette stitch = 10 cm (4’’)
• Pre-wash/block width: Approx 50 (55) cm / 19.7’’ (21.7’’)
• Pre-wash/block length: 27 (30) cm / 10.6’’ (11.8’’)
• Post-wash/block width: Approx 60 (65) cm / 23.6’’ (25.6’’)
• Post-wash/block length: 33 (36) cm / 13’’ (14.2’’)

Final Thoughts

The Mammatus Bandana is an elegant example of how carefully placed increases can transform a tiny starting section into a broad triangular accessory. The project begins with only 5 stitches, develops a small garter-stitch square, and then expands through four strategically positioned increases.

The main decorative character comes from the relationship between yarnovers, k2tog, and yarnovers knitted through the back loop. These techniques create the open texture that gives the finished fabric its cloud-inspired appearance while the edge stitches provide a more defined frame.

For the smoothest experience, treat the pattern as a sequence of manageable checkpoints. First establish the 15-stitch foundation and the four markers. Then work through the opening rows while checking the stated stitch counts. Once the main eight-row pattern begins, track each repeat carefully and remember that the instructions require 11 (13) complete repeats followed by Rows 1–6.

The final five rows of garter stitch with increases provide the finishing edge before the loose bind-off. Washing and lightly blocking the completed bandana then allows the fabric to reach its stated finished dimensions.

Whether worn around the neck or around the head, the completed Mammatus Bandana retains the distinctive triangular shape created by its central increase structure. The combination of soft Alpaca Silk, decorative openwork, and a gradual construction makes this a memorable accessory project and a useful exercise in managing increases across an expanding knitted fabric.