The ProForce Thunder Deluxe Groin Protector features a high grade leather filled with a lightweight dense foam padding. What makes this protector so special is the design helps to protect the kidneys, liver, groin, abdomen and hips. A tuck under cup provides maximum protection and comfort. An elastic waistband with a lace-tie up provides a snug fit. Fits easily under trunks. 

Small: 28-32" waist.
Medium: 34-38" waist.
Large: 40-44" waist.
X-Large: 46-50" waist.