A BOOT FIRST. A SNEAKER SECOND. We didn't get our chops building athletic shoes. We make boots. So when we decided to create a lightweight trainer, we took our 80-plus years of experience and created a boot that acts like a shoe, not a shoe that acts like a boot. Premium full-grain leather and 500D nylon keep Tachyon tactical boots rugged and nimble, and the slip-resistant outsole keeps you on your feet when you’re moving fast. A waterproof GORE-TEX lining keeps liquids at bay while allowing your dogs to breathe and sweat to escape, and the open-cell polyurethane footbed combines with a lightweight EVA midsole to provide you with superior shock-absorption and cushioning for hitting the pavement. We recommend women select 1.5 to 2 full sizes down for correct fit.