Used only once. It was a bit heavy for my child, so I'm selling it since we haven't had a chance to use it. There are no noticeable stains, and I think it's clean. There's no name written on it, but the sticker that was on the nameplate is missing. With instruction manual. 1.1L stainless steel direct-drink bottle with a triangular design and one-touch lock function. - Brand: Smart Angel - Capacity: 1.1L - Material: Stainless steel - Design: Triangular pattern - Features: One-touch lock function - Type: Direct-drink bottle Thank you for looking. Water bottle Outdoor Water bottle Insulated Antibacterial With case With strap Strap Field trip Sports Large capacity