Hydrapak Polar Sport Insulated Pulse BottleFeatures A simple design for quick hydration pull up for a cool stream, and push down for a spill free seal. Tri layer Insulation combines an external reflective heat shield with a layers of insulating foam to keep liquids cool Features an integrated Dash Handle so you can clip it to your pack or carry it in your hand. Flexible, ultra light materials and the unique grip groove combine for a sure hold and high flow squeeze The caps two pieces lid and