Fit Guide
Sizing Guide
Find your best fit for socks and jelly flats.
If you're between sizes, we recommend sizing up.
Easy fit guidanceStep-by-step instructions
US / UK / EU conversionFind your size with ease
Still unsure?We're here to help
Socks — Size by Shoe Size
Use your usual shoe size to find the best ja-vie fit.
Sock size is based on your shoe size. If you're between sizes, size up.
| Women's | S | M | L | XL |
|---|---|---|---|---|
| US Shoe | 4–7½ | 8–10½ | 11–13 | 13½–17 |
| UK Shoe | 2–5½ | 6–8½ | 9–11 | 11½–15 |
| EU Shoe | 34–38 | 38½–42½ | 43–46½ | 47–51 |
| Men's | S | M | L | XL |
|---|---|---|---|---|
| US Shoe | — | 6–9 | 9½–13 | 13½–16 |
| UK Shoe | — | 5½–8½ | 9–12½ | 13–16 |
| EU Shoe | — | 38½–42½ | 43–48½ | 47–51 |
Jelly Flats — EU Size Conversion
ja-vie jelly flats are standard European sizing. We carry whole sizes 35–42 in medium width; they may translate differently to US sizing.
| EU | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 |
|---|---|---|---|---|---|---|---|---|
| US | 4.5–5 | 5.5–6 | 6.5 | 7–7.5 | 8–8.5 | 9 | 9.5–10 | 10.5–11 |
| Length (cm) | 21.3–21.6 | 22.2–22.5 | 23 | 23.5–23.8 | 24.1–24.6 | 25.1 | 25.4–25.9 | 26.2–26.7 |
| Length (in) | 8.375″–8.5″ | 8.75″–8.875″ | 9.0625″ | 9.25″–9.375″ | 9.5″–9.6875″ | 9.875″ | 10″–10.1875″ | 10.3125″–10.5″ |
!Between sizes? Size up for the best fit.
How to Measure Your Foot
Get the most accurate fit in just a few simple steps.
Fit better. Feel better.
1
Stand on a flat surface
Place your heel against a wall.
2
Measure to your longest toe
Use a ruler or tape measure in cm.
3
Match your measurement
Find your size in the chart above.
Fit Tips
- If you're between sizes, size up.
- Compression socks should feel snug, not restrictive.
- ja-vie jelly flats are made of a soft knit "sock" and a jelly outsole. Unlike traditional leather shoes, they hold their shape over time and are not expected to stretch out.
- Still unsure? Email us at customercare@ja-vie.com and a size specialist will get back to you within 24–48 hours.
Frequently Asked Questions
Should compression socks feel tight?
They should feel firm and supportive — snug but comfortable, never painful or pinching. ja-vie's graduated compression is snuggest at the ankle and eases up the leg. If it feels too tight, size up.
What if I'm between sizes?
We recommend sizing up for the most comfortable fit — especially if you're new to compression or have fuller calves.
How do ja-vie jelly flats fit?
Jelly flats use European sizing (EU 35–42, medium width). They hold their shape and aren't expected to stretch, so use the EU conversion chart above — and size up if you're between sizes.
Still have questions?
Our team is here to help you find your perfect fit.
Wear comfortthat's worth it.