This is the Marena Recovery Long Arm Compressions Sleeves for post surgery recovery. Style No is SL. This is a 2XL BUT I’ve included the size chart from the Marena website as it will likely vary from whatever your normal sizing is. I ordered from Amazon. I ordered this for a procedure I had and ONLY opened the package to try these on PRE operation with my doctor and she said they were too big so I’d need a smaller size before the surgery. You cannot return these once the seal is broken but they’ve ONLY been tried on pre surgery!!