IBF Iron Body Fitness Training Series Boxing Gloves feature a tough outer shell and a shock-absorbing padding system. These gloves are tough enough to withstand the most rigorous Boxing and MMA workouts. They make a great pair of starter gloves for boxing classes at a gym. These gloves provide the protection, comfort and performance you expect from IBF products. Your body size and training goals will determine the ideal weight for your boxing gloves. Below are some guidelines for sizing based on your weight. Under 100 lbs (including children): 6-8 oz. boxing gloves 100-125 lbs: 10 oz. boxing gloves 125-150 lbs: 12 oz. boxing gloves 150-175 lbs: 14 oz. boxing gloves 175+ lbs: 16 oz. boxing gloves Your glove's weight indicates the amount of padding. You can also select the glove size that best suits your training goals. You can choose a heavier glove if you're trying to build endurance and strength. Heavy gloves will take more effort to lift and punch the bag. You can size down to increase and improve your hand speed. Professional boxers use several pairs of gloves and can adjust the size according to their goals.