This shirt is made of Dyneema material mixed into the Denim. Dyneema is an alternative to kevlar, and it feels like Denim, but a little bit stiffer.
This shirt is ideal to wear under the windproof hoodie/jacket, or just by itself on warm summer days. It has a mesh liner, and CE armour pads on the shoulders and on the elbows. As the liner nd pads take room, most should order 1 size up from what you normally wear.
Sizes M-3xl.