The Sprint Fivefinger takes a more active approach, adding straps for a versatile and secure fit. Hook and loop straps along the heel and instep provide a comfortable and protected fit. The upper is a thin abrasion-resistant stretch polyamide fabric. With a non-marking Vibram TC1 sole, razor-siped for extra grip. Great for many activities including flats fishing, surfing, canoeing, kayaking, camping, and travel. Machine washable and air dry.