The Active Flip Cap offers a high flow rate for tip-and-sip drinking which is perfect for high-intensity activities. The leak resistant cap includes a stainless steel hinge with spring action. The pivoting handle provides a great way to carry the bottle and stows out of the way while drinking. Our glass bottles offer a pure taste with no leaching from plastics or metals. Wide-mouth access makes it easy to add ice cubes, citrus slices, or tea bags by unscrewing cap. A unique three-dimensional sleeve design provides durability and superior grip. Dishwasher safe (place cap on top rack/no need to remove silicone sleeve). Includes polypropylene (PP#5) cap.