Blow-off feature greatly reduces the chance of a dropped bottle taking down a rider, making this the safest option for racing, sportive or group ridesnEntire bottle, including the cap is biodegradable and will return to the elements thanks to the corn - rather than oil - based plasticnNew triple-function cap with soft rubber push-pull nozzle is easy on the mouth and delivers fluid fastnEasy to grip bottle with ergonomic shape - dishwasher safe and BPA-freenthe elite corsa 550 drum is a great option to account for short routes and strolls in bicycle, since its price within the reach of all budgets is combined with a series of considerable benefits. the corsa range is manufactured with polyethylene, a type of plastic that can be squeezed considerably and that also presents a high resistance to wear. with a capacity of 550 milliliters, another big advantage of this drum is that it is a bpa-free and biodegradable product so it is fully respectful with nature. features: -drum for outs short. -great value for money. -made with polyethylene, squeezable and wear-resistant. -biodegradable and free of bpa. -capacity: 550 ml.