Flexible flask that compresses as you drink it to eliminate water bouncing inside and reduce sucking effort.
PVC, BISPHENOL-A FREE
FDA approved polyurethane.
TPU (THERMOPLASTIC POLYURETHANE)
Used for specific properties like elasticity, then comfort close to the back, transparency, to clearly see the water level inside, resistance to any liquid, then taste free, PVC free, then no toxic substances reject when recycled Thermoplastic polyurethanes are perfect for bladder and tube.
A new engineered valve that blast water for quick and non-fatigue hydration. Higher flow, softer feeling in mouth, no leaking.
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