Brazilian size M is equivalent to Japanese size LL. Used only once. Waist: Velcro closure, internal drawstring. Material: 87% polyester, 13% spandex. Product Description: These are fight shorts from Venum, a popular French combat sports brand. Manufacturer's Description: Enhance your performance with the Venum Light 3.0 fight shorts, made from ripstop fabric. The crotch Lycra insert provides excellent mobility, allowing you to surpass yourself during training and matches. The side slits on the fight shorts offer maximum freedom of movement.