Rubbermaid Reusable Chug Hydration Bottle Dark Grey 30 Ounces (Pack of 3 Reusable Bottles) Contoured, ridged shape is easy to hold comfortably and securely. Tritan material is BPA-free, durable, dishwasher- and freezer-safe, and resists stains and odors. Flip-cap opens easily for one-handed use. Lid screws off for easy refill and cleaning. Leak-proof design is great for on the go. Finger loop allows for easier carrying and frees up your hands. Pack of 3 Rubbermaid 30 ounce bottles