Thank you for viewing. This is a posture correction belt designed with ergonomics to support proper posture. I purchased it on Amazon a few months ago, but unfortunately, the size doesn't fit, so I'm selling it. I only wore it once, and it comes from a pet-free and smoke-free environment. The box is included, but there are marks from removing shipping labels on the surface (see photo 1). Instruction manual (photos 5 and 6) Included bag (photo 13) - Model: BJ01 - Size: L - Purpose: Posture support - Features: Ergonomic design - Material: Highly breathable mesh - Target audience: Unisex Thank you for your consideration!