Polar Bottles Breakaway Muck Insulated Shatter Water Bottle - 20oz Charcoal/Copper

Polar Bottles Breakaway Muck Insulated Shatter Water Bottle - 20oz Charcoal/Copper. The Polar Bottle Breakaway Muck features Tri-Layer insulation to keep water cooler 2x longer than regular bottles. Its Muckgard valve cover keeps the high-flow self sealing Surge Valve free of dirt and can be easily opened and closed with one hand.