Hydrapak Force Ultra-Durable Water Bladder/Reservoir for Hydration Backpacks, 2-Liter (66 oz.), Insulated Tube, Safe & Reliable, Grey (A522), Mammoth Grey

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KEEP YOUR WATER COOLER: Flexible HydraFusion Drink Tube with Dust Cover insulates in hot weather and protects in tough conditions
MILITARY GRADE TOUGHNESS: Ultra-durable, abrasion resistant for superior durability and elasticity – expands to 8x size without bursting
NEW HIGHER-FLOW: Engineered with high performance features including the Blaster Bite Valve with a twist on/off valve
100% BPA FREE & EASY TO CLEAN: Made from the highest quality materials, fully reversible and dishwasher safe
BEYOND LIFETIME WARRANTY: Leak-proof design with patented Slide-Seal top technology opens wide for easy filling and closes securely