Designed for everyday use, as well as the rigors of the outdoors, our Loop Caps provide a leak proof seal which aides in keeping your Hydro Flask contents cold or hot. Clip to a backpack or messenger bag and take your bottle on the road.
The Standard Mouth Cap fits our 12 oz and 21 oz water bottles.
Our Loop Caps are made from polypropylene, which means they are BPA-Free.
WARNING: Small Parts. Not suitable for children under 3 years