Adjustable pelvic belt to reduce SI joint pain. The size is XXL, but since it's worn on the pelvis, it fit me perfectly, and I'm 160cm tall and weigh 56kg with a "bone structure wave" body type. I accidentally bought two of the same item, so I'm selling this one, which is new. There's a pressure point massage feature on the back, and it fits just right, making it very comfortable to wear. I usually wear L size pants, but based on reviews, I bought a size up, and it was the right choice. The adjustable parts allow for a perfect fit! I use it when I have a job that requires me to stand for long periods. It doesn't slip, and it makes walking very easy and comfortable! - Color: Black - Function: Pain relief for SI joint dysfunction - Feature: Removable 3D massage pad - Type: Pelvic belt - Design: Adjustable with buckle Thank you for looking.