I am selling this item because the size didn't fit. I only tried it on once. There is no box. To promote effective movement of the thighs: By compressing the entire thigh towards the center, it suppresses unnecessary muscle movement and supports performance. Anti-slip pattern prevents slippage. "HeiQ SMART TEMP" for "body temperature control" function. Uses stretch material Lycra fiber to ideally support muscles. Thigh circumference: L: 49-54cm Type... Sleeve Details... Knee sleeve