Standard Mouth with Flex Straw Cap 621ml from Hydro Flask is an insulated bottle made of stainless steel. The bottle has a leak-proof lid with a quick-opening straw lid for quick and easy access to the drink. Mashine washable. Keeps your drink cold for 24 hours or hot for 12 hoursThe Flex Sip™ lid is leak proofFree from BPACan be washed in the dishwasher
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