MILITARY GRADE TOUGHNESS: Ultra-durable, abrasion resistant for superior durability and elasticity – expands to 8x size without bursting. KEEP YOUR WATER COOLER: The HydraFusion Drink Tube and Dust Cover insulates in hot weather and protects in tough conditions. HIGH FLOW: The water reservoir is equipped with our flexible, non-kinking drink tube and the high-flow, self sealing Phaser valve - It’s leak proof and perfect for handsfree hydration. EASY TO CLEAN: 100% BPA free, the water reservoir is fully reversible and top-rack dishwasher safe. LIFETIME WARRANTY: Beyond Lifetime Guarantee covers all reservoirs from manufacturing defects in materials and workmanship for the lifetime of the product.