Hydration Bladder Water Reservoir 2L, Water Storage Bladder Bag Leak Proof BPA Free FDA Hydration Pack Replacement for Hiking Biking Climbing Cycling Running BPA-FREE & FDA Approved: Food-grade premium quality anti-bacteria materials. Thick TPU bladder material is pressure-tolerant and wear-proof. Manufactured with leak proof sealing technology. Large open for easy cleaning: Inner surfaces easily accessible for easy cleaning and drying. Quick-release tube can be detached for easy storing. Convenience For Running, Hiking, Climbing, Military Backpack, Marching, Outdoor Event..