Size S-- Suit for Waist circumference: 85 cm / 33.5 inch M-- Suit for Waist circumference: 95 cm / 37.4 inch L-- Suit for Waist circumference: 105 cm / 41.3 inch XL-- Suit for Waist circumference: 115 cm /45.3 inch Standing in a relaxed position, measure waist at the level of navel (belly button). Do not assume you know your size. Do not select by pants size. Features: 1. Inguinal truss Inguinal Herniia Truss - Ultra comfortable due to its Fully Adjustable Waist Band, Groin Belt and Pad - great for Instant relief from Inguinal / Groin Herniias, Incisional Herniias and Femoral Herniia Pain and Discomfort 2. Inguinal Herniia Truss - For men and women - is specifically designed to help relieve pain and discomfort from inguinal, groin and femoral herniias. By gradually applying pressure and compression to the affected area you will get instant relief and the ability to maintain an active day to day lifestyle discomfort free. Great for herniias pre and post surgery. 3. Fits both Left or Right Side Herniia's Our Inguinal Herniia Belt is different than other Herniia Trusses due to its ability to work on either right and left side groin hernias. Simply rotate the waist band around your waist and make sure to place the pad over your left or right side groin herniia for instant relief 4. Using the best elastic and breathable materials our inguinal herniia belt will conform to your body for an ergonomically comfortable experience. Slim in nature - Wear it under your clothes with minimal exposure with exception of the the compression pad which is necessary for optimal pressure. Packing List1 Piece * BeltProducts from GuanGuan's store