The wide-mouth opening of the 25-ounce Fuse gives you the option: to ice, or not to ice? It also makes for easy cleaning, which comes in handy when you might find yourself switching among sport drinks, pressed juices, and good old H2O throughout the week. The Fuse's Eastman Triton body is shatterproof, BPA free, and odor-resistant, so your water will smell and taste like water, not like ginger, kale and carrots.