Zoom icon Click to expand Tap to zoom Chevron down icon Chevron down icon Platypus Bite Valve & Tube Insulator Kit by Platypus Sold out $14.95 SKU 29641 Availability: translation missing: en.general.icons.icon_check_circle icon Out of stock 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 Add to any existing Platypus hydration system to fend-off freeze-up in cold weather or to keep drinks cool in summer.