The Humane Restraint Strait Jacket, made of heavy duty canvas, is available in four sizes. It features a removable cotton crotch strap and leather closing straps. Fits juvenile to adult populations for controlled ambulatory movement. Removable leather straps for easy cleaning. All sizes run larger than standard sizing. Approximate jacket sizes: Small (36-42), Medium (42-44), Large (44-46), X-Large (48-50).