The chart
| Size | Women's shoe | Men's shoe | Calf circumference |
|---|---|---|---|
| S/M | US 5 – 9.5 | US 4 – 8.5 | Up to 16 in / 40 cm |
| L/XL | US 10 – 13 | US 9 – 13 | 16 – 20 in / 40 – 50 cm |
How to measure your calf properly
- Measure first thing in the morning, before any swelling builds up.
- Stand with your weight evenly on both feet.
- Wrap a soft tape around the widest part of the calf — usually about a third of the way up from the ankle.
- Keep the tape snug but not tight enough to press into the skin.
If that number is over 16 inches, order L/XL regardless of shoe size. A strap stretched past its comfortable range starts behaving like the narrow band we designed TrueFit to replace.
International shoe size conversions
| US women | UK | EU | AU/NZ women | TrueFit size |
|---|---|---|---|---|
| 5 – 9.5 | 3 – 7 | 35 – 40 | 4 – 8.5 | S/M |
| 10 – 13 | 7.5 – 10.5 | 41 – 45 | 9 – 12 | L/XL |
Getting them on the first time
A 20–30 mmHg sock is meant to be firm, so don't try to yank it on like a gym sock. Turn the sock inside out down to the heel, slip your foot in, seat the heel properly, then roll the leg up. Never bunch the top over — a folded strap doubles its pressure. We walk through it step by step in our guide on how to put on compression socks without a fight.
Once you know your size, pick your bundle and check out — every order ships free worldwide with a 30-day money-back guarantee.