Perfect Fit Socks
“Fits like a glove” may reign in the idiom kingdom, but feet, too, require snug and tailored coverings. Our Perfect Fit Socks are just that and do, in fact, fit like a glove!

Knit from the top of the leg down to the toe, our Perfect Fit Socks employ 2×2 ribbing so they hug the calves instead of slump around the ankles. A slip stitch heel flap pads the back of the foot; a grafted toe means no abrasive seams on your tootsies; and the length of the foot is adjustable to the wearer.


We introduced our original Perfect Fit Socks ten years ago, using a very fine sock yarn. Here, we’ve updated the pattern in a slightly heavier weight and for more sizes, too. Now the Perfect Fit Socks fit small kids, big adults, and everyone in between and are perfectly midweight in our beautiful Posy, a hand-dyed blend of 75% superwash merino, 15% cashmere, and 10% nylon.

Posy, too, has undergone a refresh! Now, instead of 100-gram Posy and 25-gram Pocket Posy, we have one Posy that falls somewhere in the middle at 50 grams and 159 yards. It’s the same incredibly soft and beautiful yarn, just in a new size skein… And also in five new colors!

The new Posy palette includes three gorgeous blues (Blue Dusk, Bellflower Blue, and Cloudless Sky), plus purple Mountain Lupine and Basil Green. Along with many of Posy’s original colors, there are now 16 beauties to choose from… Perfect!

Share your progress + connect with the community by tagging your pics with #PurlSoho, #PurlSohoBusyHands, #PurlSohoPerfectFitSocks, and #PurlSohoPosy. We can’t wait to see what you make!
Materials

- 1 (2, 2, 3) skein(s) of Purl Soho’s Posy, 75% superwash merino, 15% cashmere, and 10% nylon. Each skein is 159 yards/ 50 grams; approximately 115 (195, 295, 350) total yards required. We used the colors Pink Papaya, Azalea Glow, Bellflower Blue, and Blue Dusk.
- A set of US 1½ (2.75 mm) double pointed needles
- A Perfect Fit Socks Pattern
Gauge
34 stitches and 48 rounds = 4 inches in stockinette stitch
Sizes
Small Kid (Big Kid, Adult Small/Medium, Adult Medium/Large)
- Foot Circumference: Comfortably stretch to about 5½ (7, 8, 9) inches
- Leg Circumference: Comfortably stretch to about 6½ (8½, 10, 11) inches
- Foot Length: Adjustable
Samples: We knit up two Small Kid pairs of socks, one Big Kid pair, and an Adult Small/Medium pair.
Pattern

The Perfect Fit Socks Pattern is available for purchase as a PDF download only.


What is the difference between Toe-up socks and this pattern (except toe-up vs top-down)?
Hi Diane,
Thanks for reaching out! Yes that is correct, this sock is knit from the top down and also features a 2×2 rib stitch throughout the leg down to the toe. Wile the Toe-up Socks are knit from the toe up and features both a 2×2 Rib or Twisted Rib to select from! Ultimately, when finished these socks look very similar, mainly the difference comes down to the construction or if you like the Twisted Rib better than the 2×2 rib!
I hope this helps, happy knitting!
Gianna
For a first time sock knitter, and intermediate knitter overall, would you recommend the Perfect Fit Sock or the Color Block sock pattern? I intend to use Posy, and the Magic Loop method.
Hi Susan,
Thanks for reaching out! I would recommend the Perfect Fit Socks for your first pair, it is a very simple sock design and will demonstrate all of the basics, like a heel flap, that are featured in most sock patterns! I would then recommend the Easy Heel Colorblock Socks for a 2nd pair!
I hope this helps and please let me know if you have any more questions!
Warmly,
Gianna
I own the original Perfect Knit Socks pattern. Can I use it with the new midweight Posy?
Hi Ann,
Thanks for reaching out! The new pattern is actually much different from the older version, the first was written for a lace weight yarn and smaller needle size and we have now update the yarn gauge and needles for the midweight Posy! So even though they share the same name and design they are two very different versions! So if you plan on using Posy, the new pattern will be much more suitable since everything from the cast on amount to the decreases has been altered.
I hope this helps, happy knitting!
Gianna
Might it be possible to knit the sock using the Magic Loop method instead of dpn? I have only used Magic Loop for socks, but will give dpns a try if there is an advantage to this pattern. I know it can get kind of fiddly to do gusset and decreases with Magic Loop if the pattern is designed for DPNs. I just bought the pattern and yarn for two pairs of socks, so I’m going to knit them one way or another! Thank you!
Hi Christine,
Thanks for writing in! I am the same- I prefer to use Magic Loop for socks and it should to be totally fine to use that for this method! The only thing to keep an eye out for is that since this pattern is designed for DPNs, dividing the stitches up may be a bit different since you won’t be working on multiple needles. Other than that you shouldn’t have any problems!
I hope this helps, happy knitting!
Gianna
Thank you, Gianna! I am making another pair right now that is written for DPNs. I found a tutorial on YouTube for dividing the heel and gusset stitches for Magic Loop, so I think that will help.
Hi Christine,
That sounds great! I hope everything works smoothly and please feel free to reach out with any more questions!
All the best,
Gianna
Good day,
I’m just about ready to start this pattern and noticed conflicting needle size. It calls for 1.5US but 2.75mm. My 2US needles are 2.75mm so I’m doing the gauge but would love your clarification.
Hi Sandra,
Thanks for reaching out! Unfortunately, there are some inconsistencies with US needles sizes between different brands… When in doubt I always recommend going with the mm size rather than the US size. So in this case your 2.75mm needles should be fine!
I hope this helps!
Gianna
Thanks Gianna,
The gauge for the 2.75 came out perfect so YOU WERE RIGHT!
Sandra
I bought the pattern and the yarn which is lovely, but I am stuck on the first sock. I have separated 30 stitches to one needle but before that it says turn work – does that mean inside out? I am confused as to what to do. Please help! Thank you!
Hi Emma,
Thanks for reaching out! I am happy to help! So I can get a better idea, what size are you making and what section of the pattern are you on at the moment?
Warmly,
Gianna
Hi Gianna, I am making the largest sock. I am up to this direction Heel
WORK HEEL FLAP
Partial Row (right side): [K2, p2] 2 (2, 3, 3) times, k2, turn work so wrong side is facing you.
I didn’t do this – I am not sure what it means to turn the work in the middle of the pattern or how to manage a partial row in the round.
Thank you for any advice you can provide!
Hi Emma,
Thanks for reaching out! Basically, you are working a “Short Row” which means you are only working over a smaller number of stitches back and forth rather than continuing to work across all of the stitches! So once you k2, you will simply flip the work so that the wrong side of the fabric is facing you and you will then begin to work over those same stitches! The technique is a bit different when working with socks, but to see what a classic short row is supposed to look like, I would recommend checking out our Short Rows: Wrap + Turn tutorial!
I hope this helps, please let me know if you have any more questions!
Gianna
Hi!
I’m having trouble also with the short rows. I just don’t understand. I’m starting at the heel, do I need to start in the middle for the first repeat? I knitting 2 k and 2 p, repeat it 4 times and then turn work. Then I need to 2 p and 2 knit 7 times? And then turn and ga 2 k and 2 p repeat 4 times? I checked the video but with the wrap and decrease I don’t get it.
Hope you can help me, greeting from sunny Albufeira Portugal
Hi Conny,
Thanks for reaching out. Are you referring to the Partial Rows in the WORK HEEL FLAP section? If so, then these are different from wrap + turn short rows! Specifically, you do not need to make a wrap at all, you will simply turn the work and continue on to the following row. So all you’ll need to do for these Partial Rows is to repeat the [k2, p2] (or [p2, k2]) however many times is indicated for your size, and then turn your work. I hope this helps clarify things!
All the best,
Lili
Hi,
I made my socks in size medium using Posy. They came out beautifully except for the toes which are much shorter than 1 3/4″ length indicating in the pattern. For adult size medium, I figured it takes 6 rounds when repeating Round 1 and 2 for toe to reduce from 52 total stitches to 40. After that, it’s another 6 rounds of repeating Row 1 only to go down to 16 total stitches. That’s a total of 12 rounds. The gauge for this pattern is 34 stitches and 48 rounds per 4″. That will make 12 rounds of knitting to be 1″, which is exactly how long my toe is rather than 1 3/4″. Maybe I miss interpreted the pattern. Any advice will be greatly appreciate it. Thank you
Hi Reiko,
That’s a very good observation and question! The “Final Foot Length” measurement actually refers to the length of your foot, and not the length of the finished sock. Socks should generally fit with a bit of negative ease, and the shorter length of the toe makes that possible in this pattern! I hope this helps clarify things.
All the best,
Lili