The Mammat Ultimate Light Jacket. Made form Gore Windstopper, this jacket has been manufactured to be light weight & super breathable but still keep out a cold breeze. Its is perfect for the sweatier outdoor activities such as Trail Running, Nordic walking & Sport climbing, but who says it cant be used for other things like, Via Freatta and Mountain Walking. The Gore Windstopper is backed with a Tricot woven mesh so it is comfortable next to skin, & helps to aid the wicking process. Gets a tick in our book of must have summer pieces. Highly breathable Gore Windstopper Soft Shell 1 bonded front pocket 2 side pockets Underarm zip for additional ventilation Lycra® thumb holes