|  SIZE | CHEST (cm) | WAIST (cm) | INSIDE LEG (cm) | 
| XXS | 80 - 90 | 60 - 70 | 60 - 70 | 
| XS | 85 - 95 | 65 - 75 | 65 - 75 | 
| S | 90 - 100 | 70 - 80 | 70 - 80 | 
| M | 95 - 105 | 75 - 85 | 75 - 85 | 
| L | 100 - 115 | 80 - 90 | 80 - 90 | 
| XL | 110 - 125 | 85 - 95 | 85 - 95 | 
| XXL | 115 - 130 | 90 - 100 | 95 - 95 | 
If you fit a medium jacket, you will likely provide a medium in the rest of Peak's complementary thermals, trousers and Cags; but everyone is different. The best way to find a good fit is to try out our range of gear at our shop. Also, we are very good at giving advice.
Chest
Measure horizontally under the armpits around the fullest part of your chest and shoulder blades.
Waist 
 Measure the waist circumference at the smallest part of your waist.
Inside leg 
 Measure from your ankle bone to your groin.

