Made from the highest quality cow hide leather the Killa Pro Air Punch Mitts weigh approximately 10oz each. The slip on fingerless hand compartments fit the hands like a glove and keeps them comfortable and secure during usage. This wrist strap anti-slip design also allows the hands to mold into the mitts with ease with out the hands slipping out. The Air Punch Mitts are manufactured by Killa to the safest and highest quality with coaches safety and longevity being paramount.