Gore Wear Ambient Cycling VestIf you want core protection but without any weight penalty, the Gore Wear Ambient Cycling Vest is the right choice. 100% windproof and yet only weighing 58 grams, it's a cycling essential to go with you on every ride. When you're riding in terrain with lots of elevation changes or for when the weather can change its mood frequently, the Ambient Cycling Vest provides the core protection you need to keep comfortable. On a fast descent or battling into a chilly headwind, the GORE-TEX INFINIUM™ prevents any wind getting in and snatching away warmth. And once you're done descending or the day warms, it rolls up and fits easily in a jersey pocket.While it keeps the wind out, it's also highly breathable, letting sweat out when you're pushing harder on the pedals. The mesh back also helps in this regard, ensuring you don't overheat. It's a super-stretchy mesh too and in combination with the body-hugging fit keeps the vest as flap-free as possible. An ergonomically shaped collar keeps breezes out and the elastic hem gives a sleek and secure fit. Features:Materials: 100% PolyamideExtremely lightweight Partial GORE-TEX INFINIUM™ garment with GORE® WINDSTOPPER® product technologyTotally windproof, extremely breathable and durably water-resistantUltra-stretch nylon mesh in backErgonomically shaped collarFull-length zip with under flap and zipper garageElastic grip on bottom hemReflective logoWeight: 58g (Size L)Buy Gore Wear Clothing from Chain Reaction Cycles, the World's Largest Online Bike Store.