Plastic water bottle, convenient with a straw cap. - Brand: MUELLER - Type: Water bottle - Material: Plastic - Color: Transparent - Features: Straw cap I think it can be used for various sports such as marathons, cycling, and kendo. I bought two and opened them, but I haven't used one and have kept it stored. Please understand that there may be scratches from storage and that it doesn't have the original packaging. Thank you for looking.