Picture - Women's Thermals and Base Layers Size Chart

Size	UK	US	FR	Height (cm)	Bust/Chest (cm)
X Small	6	2	34	158-162	82
Small	8-10	4-6	36-38	163-167	82-87
Medium	12	8	40	168-172	88-93
Large	14	10	42	173-177	94-99
X Large	16-18	12-14	44-46	178-186	100-105

How to Measure Your Chest & Arm Length

Wear just an undergarment or nothing at all.

Stand up straight with your arms hanging by your sides and breath normally.

Run a soft tape measure under your arm pits over the largest part of your chest and across your shoulder blades.

The tape measure should be snug, but not tight.

Ask a friend to run a soft tape measure from the centre of the back of your neck, across to the tip of one shoulder, then down the outside of your arm to your wrist bone.

Still not sure what size to get? We're here to help!

Check out our Buying Guides for technical tips and tricks.

You can easily buy both sizes and send one back with our simple Return Policy.

Visit our Help Centre for advice from our team.