Specialized's Little Big Mouth Bottle, just got better. New and improved design with better feel and function. Still durable and 100% leak-free. - New Big Mouth cap design features a wide water channel to deliver up to 50% greater flow than other leading bottles, plus improved functional outside grip - Large, soft reliable poppet top is easy to activate and seals tight. 100% leak-free - Easy to grip, more flexible than original Little Big Mouth - BPA-free plastic made from 100% FDA food-grade materials and printed with non-solvent base (UV cured), CPSC-approved ink and materials