Matman 83 Adult Nylon Wrestling Singlet Sizing from manufacturer (based on weight): X-Small: (95-115 lbs) Small: (115-135 lbs) Medium: (135-160 lbs) Large: (160-190 lbs) X-Large: (190-220 lbs) XX-Large: (220-250 lbs) 100% Double-Knit Nylon Durable Fabric Made in USA