Klean Kanteen Sport Cap 3.0, Leak Resistant Water Bottle Cap with Safe and Soft Silicone Spout Leak Resistant and "chirp" free. Silicone Spout Dishwasher Safe Safe, Durable, High Quality Materials No BPA, No Lead, No Phthalates Silicone spout is soft for comfortable drinking and allows hydration on the go whether biking, hiking or leisure Chirp reduction for noise-free drinking BPA, Pthalate and lead free for ultra pure hydration Spout is easy to pull up and push down for leak free protection. Loop allows transporting with a D-ring for backpacks and belt loops.