Cycling Sock Size Guide

We keep sizing simple on purpose: two sizes, cut to fit most riders well. But "S/M" and "L/XL" don't mean much on their own, so here's exactly what they cover — and how to pick the right one without measuring tape and guesswork.

The size chart

Size	EU shoe size	US (men's)	UK
S/M	38 – 42	5 – 9	4.5 – 8.5
L/XL	43 – 47	10 – 14	9.5 – 13.5

Match your usual shoe size (cycling shoes or everyday shoes both work as a reference) to the closest row. That's it.

Right on the border?

EU 42 and EU 43 sit right at the line between S/M and L/XL. If that's you, it comes down to how you like your sock to sit: go S/M for a snugger, closer fit — the usual choice for road riding, where you want zero bunching under a tight cycling shoe. Go L/XL if you prefer a slightly more relaxed fit, or if you lean toward wider feet.

How to measure, if you want to be precise

Measure both feet barefoot, standing, at the end of the day when feet are at their largest. Use the bigger of the two measurements and match it to your usual EU shoe size — not the size on the label of a shoe that runs small or large.

What doesn't change between sizes

Every pair, regardless of size, is cut to the same UCI-approved height at the calf. Sizing only affects the foot length and stretch through the arch, not how high the sock sits on your leg.

Still not sure?

Our socks are made to stretch comfortably across a range within each size — they're not a rigid, one-length fit. If you're between sizes, sizing down is usually the safer call for road cycling; size up if you prefer more room or wear thicker liner socks underneath.

Browse the full range in Cycling Socks, or start with a single pair from Gifts for Cyclists if you're buying for someone else.