Amphipod Hydraform Ergo-Lite Ultra 20oz Handheld Charleston Shoe Co. The polyester and elastane blend

The polyester and elastane blend offers added durability and comfort

Seamless Construction: Sealed seams keep feet dry and comfortable

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No sweeteners

For the toddlers our four smallest sizes come with a back strap

Amphipod Hydraform Ergo-Lite Ultra 20oz Handheld Charleston Shoe Co. The polyester and elastane blendThis premium insulated design seamlessly integrates easy access storage with comfortable hand relaxing ergonomics, and slosh minimizing physics. Insulated sleeve with Thumb Lock design keeps liquids cool and hands sweat free while eliminating cramping tension Expandable pocket for essentials with internal key fob and ID cash pocket Features adjustable strap for the perfect custom fit and easy access outer gel slots All Hydraform Bottles are ice cube