Authentic cowhide leather protects the shock-resistant 44mm thick polyurethane mould provides the perfect amount of protection while throwing or blocking strikes 15cm wide knuckle base ensures a snug and comfy fit keeping bone integrity intact especially when wearing hand wraps Classic kickboxing style boxing gloves comes with short a hook and loop cuff to allow more padding on the wrist Kickboxing gloves come in a variety of sizes for different weight classes.