A 21 oz. borosilicate glass water bottle with a thick protective silicone sleeve. Designed for chugging and easy ice loading, Bink’s wide-mouth Carry Cap ensures a smooth flow and clean taste. Car cup holder compatible. Features: Simple hydration tracking time markers on silicone sleeve Wide mouth makes it easy to clean Ice cube compatible Thick protective silicone sleeve Comfortable Polypropylene Carry Cap 100% Leak-Proof Car cup holder compatible BPA, Lead, Cadmium, Phthalate, Free Dishwasher Safe