*If you plan on using back armour, we recommend going up one size* - The best way to find out your size is to measure a hoodie you already own, and that fits the way you want while on your bike (factoring in any garments you wish to layer underneath). Lay your hoodie flat on a table, and measure the chest, making sure to go from side seam to side seam (near the armpit like in the photo below). It's very important that you reach the seam join on each side, even if you have to bend a little around the sides of the jacket. Compare your measurement to the size chart above.
If you're unsure of your size, please EMAIL US at firstname.lastname@example.org, especially if you are an international customer. We are here to help and will do whatever we can to make sure you order the right size.
Model in the photos is 6ft, 83kgs, has a 100cm chest and is wearing a size Large.