When buying Sparring Gloves, you use a bigger oz glove than you would fight in, to protect your hands, your sparring partner and give you a harder workout. Many people also use their sparring gloves on boxing punch bags for a harder and safer workout, as sparring gloves protect your hands better, than boxing bag mitts. Sparring gloves are also often used with hook and jab pad training as this too helps protect your hands and give you a harder workout as the weigh more than a bag mitt.