Twins Boxing Gloves with the Velcro wrist strap are made to withstand the immense pressures that world-class Martial Arts competitors put upon their equipment. The 8 and 10 oz gloves are designed for competition bouts. The 12, 14, 16, and 18 oz gloves are ideal for training and sparring. Their heavier glove provides for a rigorous workout and the attached thumb design prevents injuries.