This straight jacket is straight up institutional grade bondage. It is made of durable Quadlan material which is used in hospitals to offer a more comfortable feel than canvas but stronger. Quadlan is easy to clean and water resistant. The closing straps are made of high quality material. On the back, you will find three durable straps with steel buckles and one strap that goes around the body. This will make sure that your partner stays locked in nice and tight. The jacket has 2 crotch straps and an arm strap in front to limit movement. This jacket is available in four sizes: small (size 36-42), medium (size 42-44), Large (44-46), X-Large (48-50). Think of your normal jacket size when you determine which size fits you best.