Zoom icon Click to expand Tap to zoom Chevron down icon Chevron down icon Wide Flex Cap by Hydro Flask Save Liquid error (product-badge line 32): Computation results in '-Infinity'% $9.95 | / Black / One Size - $9.95 Color Black Size One Size 1 2 3 4 5 6 7 8 9 10+ Quantity Chevron down icon Quantity Sold out Spinner icon Notify me when back in stock Email address Email me when available The Wide Mouth Flex Cap is designed for ultimate portability and easy-carry comfort. Insulated, flexible and built to last.