Durable PU Construction: Made from polyurethane material designed to withstand regular boxing, kickboxing, Muay Thai, sparring, and heavy bag training. Multi-Layer Foam Core: Multi-layered foam is designed to absorb impact during striking practice while supporting hand and knuckle comfort. Secure Wrist Closure: Wrap-around wrist construction with a hook-and-loop closure provides an adjustable and secure fit during training. Pre-Curved Anatomical Design: Ergonomic pre-curved construction promotes natural fist closure and supports control during punching, mitt work, and bag training. Multiple Sizes & Colors: Available in 12 oz, 14 oz, and 16 oz sizes and Blue/Black, Red/Black, and Grey/Black color variations.