Hydro Flask Standard Mouth Flex Cap

A cap that keeps up with the times. Our Standard Mouth Flex Cap is a sturdy and flexible closure that accompanies you on all your adventures, from spontaneous camping trips to unforgettable road trips. This cap is designed with stainless steel fittings and an easy-to-carry handle, featuring the honeycomb Honeycomb Insulation™ thermal insulation system that keeps your drinks cold for 24 hours or hot for 12 hours. It is compatible with any of our standard mouth bottles!

Features: - Compatible with all standard mouth bottles. - The Honeycomb Insulation™ keeps your drinks warm or cool. - The durable stainless steel fittings allow for easy handle movement. - BPA and phthalate-free. - Lifetime warranty.