Free UK delivery on orders £75+•Hassle free returns•Designed for cold-water swimmers
Back to shop

Size Guide | Cold Wild Swim Club

A little less guesswork

Get the fit you’ll reach for.

Start with a T-shirt that already feels right. A quick width and length check helps you choose with confidence.

Comfort Colors 1717 heavyweight T-shirt
Relaxed unisex fit. Use this garment’s chart, as sizes can differ between styles.

01

Pick a favourite

Choose a T-shirt you like wearing. Lay it on a flat surface and smooth it gently without stretching.

02

Check two measurements

Measure the width below the armholes, then the length from the shoulder beside the neck to the hem.

03

Choose your room

Compare with the chart for a similar fit. Want extra space? Check the next size’s width and length before choosing.

Compare with my T-shirt

Enter your garment’s measurements below. Use the flat width, not the measurement around your chest.

The comparison uses this garment’s size chart. Your measurements stay in your browser and aren’t saved by this guide.

How to measure

WidthLength

Width: measure straight across the front, just below the armholes, from one side to the other. Do not double this number.

Length: measure from the highest point of the shoulder beside the neck down to the bottom hem.

T-shirt measurements

Finished garment measurements. Both centimetres and inches are shown.

Size Flat chest width Body length
S 46.4 cm / 18.25 in 67.6 cm / 26.63 in
M 51.4 cm / 20.25 in 71.1 cm / 28 in
L 55.9 cm / 22 in 74.6 cm / 29.38 in
XL 61 cm / 24 in 78.1 cm / 30.75 in
2XL 66 cm / 26 in 80.3 cm / 31.63 in
3XL 70.5 cm / 27.75 in 82.6 cm / 32.5 in
4XL 75.6 cm / 29.75 in 85.1 cm / 33.5 in

Small manufacturing differences are normal. Compare both width and length and allow a little room.

Still stuck between two sizes?

Email info@coldwildswimclub.com with the design you’re looking at, your garment’s width and length, and how you like it to fit. We’ll help you compare.

Cold Water. Warm People.