Recommended for those who spend long hours at a desk, use smartphones, read, play games, or are long-distance drivers! Start with 10-20 minutes at first, and as you get used to it, aim to wear it for about 2 hours a day. The compression belt is very easy to wear with a zipper and Velcro, and you can freely adjust the tightness. It's designed to be worn like a backpack, so you can easily put it on and take it off by yourself. Size: XL Please refer to the size chart, this is just a guide. Color: Black 29 Posture Supporter, Kyphosis Belt, Posture Belt, Back Muscle Belt, Back Support, Corset, XL