This protector can be used to prevent injuries to the right side, side of the abdomen, and back, such as abrasions and rib injuries. It cannot be used in matches. Recommended for those who want to practice hard but are hindered by pain. The store manager used to sew four thin blankets onto a T-shirt, but this protector is easier on the bones. It cost about 7000 yen. I've used it a few times, but it's still in good condition. Please understand that this is a used item, and returns are not accepted. Material: Polyester Sizes: M (Weight: 60-70 kg), L (Weight: 70-80 kg) Velcro is attached over a wide area, so it's flexible. It feels stiff at first, but it's said to become more comfortable with use.