Asolo - Boundary XCR (Light Brown) - Men's: Upper is a combination of water resistant suede (1.6-1.8mm.) and full-grain leather (1.4-1.6mm.). GORE-TEX XCR lining keeps your feet dry and maintains breathability. Asosorb lasting board. Lite 1 anatomic footbed. Asolo-Vibram Olympus outsole is a combination of rubber and EVA with the traction and durability that you require. Shoe weighs 460 g. (1/2 pair, size 8.5).