Corrugated Hat + Cowl
From crisp cast ons to exquisite decreases, the design for our Corrugated Hat + Cowl has been considered, tweaked, and reconsidered, so you get to be, “I’m just gonna knit this up, throw it on, and be pretty darn certain it’s going to look amazing!”
Forget complicated… The knitting for this set is really just clever slip stitches that you’ll master in under a minute, and each round involves just one yarn, so you’ll never even have to hold more than one strand at a time.
For our hat and cowl combo, we chose two opposites-attract yarns: our undyed and rustic Good Wool, plus a colorful choice of Mulberry Merino, whose merino-silk blend adds a touch of refinement. We just added 17 stunning new colors to our Mulberry Merino collection, so we were able to use one beautiful color for the hat and a slightly different one for the cowl, making for a pretty stunning duo!
We picked bright Red Poppy and toasty Red Pine for our version, but choose from a spectrum of two gorgeous colors of Mulberry Merino and two skeins of Good Wool in Heirloom White… And cast on for a truly considered knit!
Designed for Purl Soho by Jake Canton.
Materials
To knit your own Corrugated Hat + Cowl, you will need five skeins total to make both the hat and cowl. We used Red Poppy + Red Pine in Mulberry Merino, shown above. You will also need…
- Yarn A: 2 skeins of Purl Soho’s Good Wool, 100% Andean highland wool. Each skein is approximately 383 yards/100 grams. We used Heirloom White.
- Yarn B: 1 skein of Purl Soho’s Mulberry Merino, 80% extra fine merino wool and 20% silk. Each skein is approximately 247 yards/100 grams. We used Red Poppy.
- Yarn C: 2 skeins of Mulberry Merino. We used Red Pine.
NOTE: The Hat requires approximately 45 (65, 90, 115, 135) yards of Yarn A and 55 (75, 110, 135, 160) yards of Yarn B. The Cowl requires approximately 370 yards of Yarn A and 415 yards of Yarn C.
You will also need…
- US 7, 16-inch circular needles (for Kid, Adult Small, Adult Medium, Adult Large Hats only)
- US 7, 32-, 40-, or 47-inch circular needles (for Cowl only)
- A set of US 7 double pointed needles (for all Hats)
- Stitch markers, including one unique one
And here are some more color ideas…
Green Peppercorn + Green Spruce
Yarn A: Heirloom White; Yarn B: Green Peppercorn; Yarn C: Green Spruce
True Turquoise + High Tide
Yarn A: Heirloom White; Yarn B: True Turquoise; Yarn C: High Tide
Alpine Rose + Red Plum
Yarn A: Heirloom White; Yarn B: Alpine Rose; Yarn C: Red Plum
Cinder Gray + Gray Shade
Yarn A: Heirloom White; Yarn B: Cinder Gray; Yarn C: Gray Shade
Gauge
29 stitches and 30 round pairs = 4 inches in stitch pattern
NOTE: When you count rounds, each round you see is actually 2 rounds worked, i.e. a “round pair.”
Sizes
Hat
Baby (Kid, Adult Small, Adult Medium, Adult Large)
- Finished Circumference: 14¼ (16½, 18¾, 21, 23¼) inches
- Finished Height: 6½ (7¾, 9½, 11, 11¾) inches from rolled edge
Cowl
One Size
- Finished Circumference: 55¼ inches
- Finished Height: 12 inches
Notes
Slip Stitches
Slip all slipped stitches purlwise with yarn in back.
Stitch Multiple
This Cowl pattern is worked over any even multiple of stitches.
S2kp: Slip 2, Knit 1, PSSO
Slip 2 stitches together knitwise with yarn in back, knit 1, pass 2 slipped stitches over knit stitch and off right needle. [2 stitches decreased] For additional help visit our S2kp Tutorial.
Hat Pattern
Begin
With Yarn B, cast 104 (120, 136, 152, 168) stitches onto 16-inch circular needles (or double pointed needles if making Baby size).
Place unique marker and join for working in the round, being careful to not twist the stitches.
Round 1: With Yarn A, *k1, slip 1 (see Notes), repeat from * to end of round.
Round 2: With Yarn B, *slip 1, p1, repeat from * to end of round.
Repeat Rounds 1 and 2 until piece measures 4¾ (5¾, 7½, 8½, 9) inches from cast-on edge, unrolled, ending with Round 1.
Shape Crown
NOTE: For all sizes except Baby, change to double pointed needles when stitches no longer comfortably fit around circular needles.
Set-Up Round: With Yarn B, *[slip 1, p1] 13 (15, 17, 19, 21) times, place marker (pm), repeat from * 2 more times, [slip 1, p1] 13 (15, 17, 19, 21) times.
Round 1: With Yarn A, [ssk, *k1, slip 1, repeat from * to 4 stitches before next marker, k1, k2tog, slip 1, slip marker (sm)] 4 times. [8 stitches decreased]
Round 2: With Yarn B, [slip 2, *p1, slip 1, repeat from * to 4 stitches before next marker, p1, slip 2, p1, sm] 4 times.
Round 3: With Yarn A, [ssk, *slip 1, k1, repeat from * to 4 stitches before next marker, slip 1, k2tog, slip 1, sm] 4 times. [8 stitches decreased]
Round 4: With Yarn B, *slip 1, p1, repeat from * to end of round.
Repeat Rounds 1–4 three (4, 5, 6, 7) more times. [40 stitches remain]
Next Round: With Yarn A, *ssk, [k1, slip 1] 2 times, k1, k2tog, slip 1, sm, repeat from * to end of round. [32 stitches remain]
Next Round: With Yarn B, *slip 2, p1, slip 1, p1, slip 2, p1, sm, repeat from * to end of round.
Next Round: With Yarn A, *ssk, slip 1, k1, slip 1, k2tog, slip 1, sm, repeat from * to end of round. [24 stitches remain]
Next Round: With Yarn B, *slip 1, p1, repeat from * to end of round.
Next Round: With Yarn A, *ssk, k1, k2tog, slip 1, sm, repeat from * to end of round. [16 stitches remain]
Next Round: With Yarn B, *slip 3, p1, sm, repeat from * to end of round.
Next Round: With Yarn A, *s2kp (see Notes), slip 1, sm, repeat from * to end of round. [8 stitches remain]
Next Round: With Yarn B, *slip 1, p1, repeat from * to end of round.
Cut Yarn B.
Next Round: With Yarn A, knit to end of round, removing all markers as you come to them.
Cut Yarn A, leaving an 8-inch tail. Thread tail onto tapestry needle and draw through remaining stitches twice. Pull tight and insert needle through top of crown to inside of hat.
Weave in ends and block as desired.
Cowl Pattern
With Yarn C, cast 400 stitches onto 32-, 40- or 47-inch circular needles.
Place unique marker and join for working in the round, being careful to not twist the stitches.
Round 1: With Yarn A, *k1, slip 1 (see Notes), repeat from * to end of round.
Round 2: With Yarn C, *slip 1, p1, repeat from * to end of round.
Repeat Rounds 1 and 2 until piece measures 12 inches from cast-on edge, unrolled, ending with Round 1.
Cut Yarn A.
With Yarn C, bind off in 1×1 rib stitch pattern. Here’s how…
Bind Off Row: K1, *p1, pass first stitch over, k1, pass first stitch over, repeat from * to last stitch, p1, pass first stitch over. Fasten off last stitch.
Weave in ends and block as desired.
PRINT
Love this pattern, thank you PS!! 🙂
It appears that the natural color is worsted weight, and the colored yarn is DK weight.
Is that correct? Thanks!
Hi Jennifer,
Thanks for reaching out! You are correct that Good Wool can knit up at either a light worsted or a DK gauge, while Mulberry Merino is a sport weight yarn. The difference in weights is fairly minimal so they work quite well together both for this hat and cowl set and our Double Knit Blanket.
Happy knitting!
Julianna
Love the cowl & just want to make the cowl only.
How many skeins would I need? My thought is one heirloom white & 2 Mulberry Merino…..making the circumference slightly shorter. Appreciate your thoughts on this.
Hi Elaine,
Thanks for writing in! We used almost all of one skein of Good Wool and two skeins of Mulberry Merino for the cowl alone, so this should still be a good amount even if you are making the cowl a bit shorter.
I hope that helps!
Julianna
The pattern Corrugated Cowl, how do I print off a copy? There’s no load tab. Could you provide a link or pdf, please. I sure hope so. Thanks so very much.
Hi Jan,
Thanks for reaching out! You can certainly print or save a PDF of our free patterns! If you’re on a desktop version of the site, you will find a “print” icon in the right column just below the date and tags. If you’re on a mobile version of the site, you will find a “print” icon below the pattern and above the comments.
Follow the easy on-screen instructions to delete whichever parts of the pattern you don’t want to print or save, such as the hat pattern. For example, you may decide to shorten the pattern by omitting certain images or the list of materials. To remove images, click the drop down next to the image icon and change from 100% to 0%.
I hope that helps!
Julianna
I’m thinking of making these pieces in 2 colors of Good Wool only.
I like the neutral colors and the price. Wondering, though, is Good Wool scratchy at all?
Thanks for your time!
Hi Lee,
Thanks for reaching out and what lovely idea – I love using the natural colors of Good Wool together for colorwork projects! Good Wool does have a hearty, pleasingly rustic texture, and although it is not as soft as merino, I find it plenty soft for next-to-skin wear.
Best,
Julianna
Reading the pattern I noticed for the hat no yarn C was listed and for the cowl no yarn B was used
There must be an error. Thank you for checking.
I love the look of the photo.
Hi Joan,
Great question! This is correct! We use the same color of Good Wool for both the hat and the cowl but different colors of Mulberry Merino for each. So for the hat, you will use colors A and B and for the cowl, you will use colors A and C! As the colors of Mulberry Merino that we put together for each bundle are coordinating, you will get a hat and cowl that have a similar look and feel but slightly different colors!
I hope that this clears things up!
Cassy
Thank you, now I understand, the hat and
cowl are slightly different
Hi, is this cowl doubles around the neck? Fifty five inches seems to wide to not be but it doesn’t look doubled in the picture.
I noticed the good wool in heirloom white is a dk weight. I have 2 skeins of cashmerino Bloom in wheat as I changed my mind on a project. Could I use that instead of the good wool if I am only making the cowl? Alternatively, is there any reason to not do the cowl in all mulberry merino? Would think it would be a bit softer and less itchy. Thanks lisa
Hi Lisa,
Great questions! Yes, although the second layer is hard to spot, our model is wearing the cowl wrapped twice – it is quite long! We love using Good Wool because of its generous yardage and interesting texture, but substituting either Cashmere Merino Bloom or another color of Mulberry Merino would be a wonderful alternative.
Happy knitting!
Julianna
I would like to make just the cowl but I notice that the white color in the good wool is sold out. What is a good substitute? Would it work to use 2 different colors of the mulberry merino or do you need different textures of yarn to show off the stripes? Thank you!
Hi Judy,
I’m so sorry that we are out of stock of Good Wool in Heirloom White! You could definitely substitute either another color of Mulberry Merino or Cashmere Merino Bloom – while Good Wool does add a bit of texture, as long as you use two contrasting colors, the stripes will still stand out quite well!
Best,
Julianna
What cast-on method would you recommend for the cowl? I wish more patterns would indicate this. (I know many people have a preferred method that they use for everything but I’d like to know what the designer thought was the best for any given pattern.)
Hello Trish,
Thank you for reaching out! I reccomend using a long tail cast on for this project.
Happy knitting!
-Marilla
I want to make adult medium size hat only, so only one skein each of A and B?
Thanks just double checking
Hello Beth,
Thank you for reaching out! You are correct, to make just the hat you will only need yarns A and B.
Happy knitting!
-Marilla
I am making the hat portion of this pattern. On the shaping of the crown, at the ends of decrease row 1, I am only counting 5 stitches decreased rather than the 8 as stated. The same goes for decrease row 3.
Hi Jane,
Thanks for reaching out! After completing the decrease set up round, you should have four markers, including the beginning of round marker, dividing your stitches into four equal sections. When working each odd numbered decrease round, you will be repeating the entire bracketed section, which begins with a ssk and ends with a k2tog and k1, in each quadrant of the hat, so you will be decreasing 8 total times. I suspect when reading the repeat you missed going all the way back to the first bracket!
I hope that clears things up!
Julianna
Thank you for the clarification. That is exactly what I did. Love your patterns, videos, and comment sections. They have solved so many questions for me. And of course, love all of your yarns. They are exquisite. Wish you would open a branch in St. Louis. There is nothing like tactile capabilities.
Gabbie,
The yarn suggests needle sizes 4-6, however, the pattern states needle size 7. Why?
Thank you,
Tiffany
Hi Tiffany,
Thanks for reaching out! The Corrugated Rib stitch tends to create a denser fabric than most stitches, so we went up a needle size to counteract this. The recommended needle sizes on the label are a suggestion but often depending on one’s personal tension as well as the nature of the stitch you are using, you may need to use a larger or smaller needle than is recommended.
I hope that clears things up!
Julianna
I would like to make the cowl but only big enough to go around the neck once. Would it work to make it half as long? And if so, would I then just need half as much yarn? That seems logical to me, but I am a beginner knitter and worried that I am missing something. I have my eye on some of the beautiful colors that you have for this cowl. It looks quite do-able for a beginner!
Thank you!
Hello Judy,
Thank you for reaching out! You are absolutely correct- half the size means half the yarn. The cowl can be worked of any even stitches so for example if you want it to have a circumference of 27 1/2 inches you would cast on 200 stitches.
I hope this helps and happy knitting!
-Marilla
When I started the hat, casting on with the green and then beginning the k1,s1 with the white I am finding that my hat is not coming out striped but really all green. What has gone wrong? I’ve made about 5 rounds and only the green is showing even though I alternate rounds green and white.
Thanks!
Katie
Hi Katie,
Thanks for reaching out! I suspect that, on the Yarn B rows, you are slipping your stitches with the yarn in front. It isn’t specified in the row, but in the notes section before the pattern begins, you will see there is a note that all slipped stitches should be done purlwise with the yarn in back. This should make your stripes appear as they should!
I hope that helps!
Julianna
I’ve made the cowl for a friend and loved the stitch pattern. Is there a way to make it flat (not in the round) to make a wrap s
Instead of a cowl?
Hi Eileen,
Thanks for writing in! Unfortunately, we do not have instructions for working this stitch pattern flat. Although Fisherman’s Rib is a bit more complicated than the slip stitch pattern we used for the Corrugated Cowl, it does give a similar effect and our Color Dipped Scarf might be a good jumping off point!
I hope that helps!
Julianna
What is the circumference of the cowl? I see it is 12″ deep. I’m trying to calculate how much yarn I’d need to make a striped pullover sweater using the same stitch pattern.
Thanks!
Hello Jessie,
Thank you for reaching out! The finished circumference of this cowl is 55¼ inches.
Happy knitting!
-Marilla
Hello
I have just finished both hat and cowl adult small.
Both lovely.
Thanks for a great pattern.
What suggestions do you have for the left over yarn?
Hi Maria,
Thanks for writing in, and I’m so happy to hear you enjoyed knitting our hat and cowl! If you used our bundle, you should have enough yarn left to make two more Corrugated Hats, one with each contrast color. Or, you could use the leftover Good Wool to make a pair of Slip Stitch Handwarmers and the Mulberry Merino to make a color blocked version of our Classic Ribbed Hat!
I hope one of these options works for you, and happy knitting!
Julianna
Thank you so very much Julliana.
Your suggestions helped me a lot.
Is there a way to do the cast-on for the hat, where it will not flip up (as in your photos, and as in my hat!)? Thanks.
Hi Carmella,
Thanks for reaching out! Unfortunately, there isn’t a cast on that will prevent curling when knitting a stitch pattern that naturally curls. If you would prefer the edge of the hat to lay flat, you will need to start with a stitch that will not curl up – an inch or so of 1×1 ribbing on a needle two sizes smaller than your main needle should do it!
I hope that helps!
Julianna
Thanks, Julianna. I thought of this too, but I like the look of diving right away into the pattern. If one were to do ribbing, can you explain why needles 2 sizes smaller; would this not make it tight? Or would one work an elastic cast on? Having learned how to cast on the continental way, I find the various elastic cast-ons confusing…
Hi Carmella,
Generally, when knitting hats, you want the brim to be tighter than the rest of the hat so it stays on better. The slip stitch pattern knits up at a much tighter gauge than a regular stockinette or ribbing would, so using a smaller needle will make the diameter of the ribbed brim match the diameter of the hat. A long tail cast on is plenty stretchy to go along with ribbing on a hat, so there is no need to use a special cast on – usually, you will use those for garments that need to stretch over a large part of the body, such as a neckline of a sweater or the cuff of a sock.
Best,
Julianna
Hey
Thank you for a very lovely pattern.
I am Knitting the hat, but I cannot get the decreasing (8stc)….. ssk at first marker i get. But befordring next m one is only decreasing 1 stc. How do i get the 8, what am i missing?
Best regards
Lis
Hi Lis,
Thanks for reaching out! When working the set-up round for the decreases, you should have placed 4 markers, dividing your hat into 4 equal sections. In each following decrease row, you will then repeat the section within the asterisks, which contains both a ssk and a k2tog, once in each of the four sections, for a total of 8 decreases in each row.
I hope that clears things up!
Julianna
I am decreasing at the crown where ssk’s are required, and doing this as I have done lots of times before – slipping the two stitches knitwise. It is not looking as nice as in your pattern (actually rather awful!) and so I followed the link to your ssk video, and see that you slip the first slip knitwise, and the second purlwise, which I have not seen before. So I am going to unravel what I have done and go with this. If this is indeed what you intended, maybe add this to the pattern?
Hello Carmella,
Thank you for reaching out and this great suggestion! I will certainly pass it along. While either ssk will work if you slip one knitwise and one purlwise it just tightens up the stitch.
I hope this is helpful and happy knitting!
-Marilla