Clean Bottle Tritan Square BPA-Free Water Bottle, Opens from Both Ends, 25 Ounce Opens from both ends providing easy cleaning Unique Square body prevents it from rolling around and still fits cup holders Wide ergonomic easy to hold handle provides comfort when carrying Modular system lets you customize your Square with an optional filter, infuser, and more (each sold separately) Bottle is great for yoga, rock climbing, the gym, basketball, hockey, football, and hiking Materials are BPA free and dishwasher safe, 25 fluid ounce capacity