SPRINTSKIN proprietary lightweight and waterproof upper material provides a consistent fit and long lasting durability * Internal Waterproof Membrane * SPRINTWEB is a patent pending internal TPU layer that provides upper stability during lateral movements for unrivaled support during your swing * SPRINTFRAME outsole weighs only 3.4 oz -- the lightest ever offered by Adidas * This shoe is 43% lighter than a FootJoy FJ Icon!!