The Ultra raptor II Mid GTX is a lightweight hiking boot based on the concept of running shoes. You'll love them for their light weight and ability to cushion every step. The abrasion-resistant fabric upper provides excellent breathability, and the soft upper collar effectively prevents stones or other debris from entering the shoe. The Gore-Tex® membrane helps maintain a comfortable climate during colder or rainy weather. The ideal choice for those who don't want to trudge around in heavy socks. Waterproof - GTX membrane. Breathable upper material. Soft upper collar. Foam midsole that provides the ultimate in cushioning. High grip FriXion White outsole. Torsion stabilizer. Impact Brake System. Wider fit that provides plenty of room (compared to other La Sportiva models).