Its over-moulded cover offers better grip on the bottle and its double-closure Pro-Cap system makes it 100% watertight for easier carrying.Like the Sense and Shark bottles, it is manufactured with Zefal's specific polypropylene material, which is light, more flexible, and odourless to keep your drinks clean and pure.Pro-Cap: Double-closure system for 100% Watertight transportSoft-Push: Soft push for a pleasant sensation while drinkingGrip Ring: Over moulded cover for better grip on the bottleOdourless material:: The polypropylene material keeps water cleanBPA Free: Bo Bisphenol-A, phthalates, or other toxins usedCapacity: 800ml/27 ozHeight: 239mmWeight: 85g