Zoom icon Click to expand Tap to zoom Chevron down icon Chevron down icon Medium Bottle Boot by Hydro Flask Save Liquid error (product-badge line 32): -Infinity% $7.95 Black - $7.95 Cobalt - $7.95 Stone - $7.95 Color Black Cobalt Stone Availability: translation missing: en.general.icons.icon_check_circle icon Only 12 left! 1 2 3 4 5 6 7 8 9 10+ Quantity Chevron down icon Quantity Add to cart Spinner icon Looking for Local Pick-up? Choose a store below. Product Locator by Locally Notify me when back in stock Email address Email me when available Make your Hydro Flask your own with a colorful, durable silicone Flex Boot. Customize your look and protect against bumps and dings.