Hydro Flask 21 OZ (621ml) Standard Flex Cap

Stainless steel and cupholder compatible, the reusable, refillable 21 oz (621 ml) Standard Mouth insulated water bottle keeps cold drinks cold for 24 hours, hot drinks hot for up to 12 hours, and holds enough hydration for hours of fun.

• Up to 24 hours cold, up to 12 hours hot
• TempShield® double-wall vacuum insulation
• Leakproof when closed
• Fits most cupholders
• Dishwasher safe
• Not for use in a microwave
• Keep hot liquids out of the reach of children