These "Professional" MMA Competition Gloves have been competition tested and are approved by top-level athletes. These “Professional" MMA gloves weighs 4oz so it can be used in competitions or for training in the gym. The glove interior is lined using our Proprietary I-COMFORT technology for a non-slip feature. The outer shell is real leather. We have also included a formed foam interior perfect for avoiding eye pokes, limiting damage to the hand, and provides great durability.