Ecco use the finest Yak leather for their top quality golf shoes. This leather is processed in their own tanneries to produce the thinnest yet most durable leather uppers. Their new Men’s Golf Biom Hybrid 3 golf shoes benefit from this type of leather upper which is also extremely breathable. This allows the foot to remain dry and cool throughout your round. The Gore-Tex membrane ensures that the shoes are totally waterproof thereby not allowing any moisture leakage into the shoe.