We began with a highly technical, three-layer softshell for the front—called 2XS—and a lighter, more breathable textile in the back—the time-tested Push Pull we use to build our jersey pockets. 2XS is a flexible, membrane-equipped textile that blocks chilling winds and road spray, while also locking in that precious body heat around your core. Push Pull’s open-knit structure is super stretchy and lightweight, resulting in a breathable and moisture wicking back panel from top to bottom.