Oppo: Hernia Truss (Single Sided) OP2149. Adjustable thigh strap made from soft elastic Hook and loop closure controlled fit Provides compression around the affected area with targeted compression on the hernia, reducing the inguinal hernia Right and Left Size: Measure around the pelvis: 70.5-80.6cm Small, 81.3-92.1cm Medium, 92.7-103.5cm Large, 104.1-114.9cm X Large.