POLAR BREAKAWAY INSULATED 20oz DAWN/DUSK CHARCOAL/SKY-BUHigh flow Surge valve provides a sip or a blast of water and self seals to eliminate spill and splatter on your bumpiest ride Spill proof when open and pushes closed for leakproof transport Engineered cool, Tri layer Insulation takes Polar Bottles recognized radiant heat reflective technology to the next level, keeping your bottle way cooler, 2X longer Unique grip groove and wall design makes it easier to squeeze Bottle shape and size is compatible