Better Materials for Healthy ConcernWe take all food health issues seriously and we take it into consideration when design our bike water bottle. This water bottle adopts food grade silicone on the bottle spout to ensure your health. And the PP5 material of the body can withstand high temperatures of 75°in case of melting and producing toxic substances. Easy Squeeze to Intake More FluidPP5 material gifts this bike water bottle advantage of easily squeezing. Squeeze to intake more water with less effort to support your cycling. Cooperate with the large bottle spout to hydrate quickly, always stay online during exercise or cycling. Optimized Size to Fit all CagesEspecially designed body size, this bike water bottles diameter is 7.4cm/2.9inche., This size water bottle can fit almost all size bottle cages on the market. We hope you can feel free to choose your cycling gear without concern about its size. laminated Foam for Insulating over 5hrsInsulation means important to e