Hydro Flask

21 oz Standard Mouth

Colour: Graphite
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Double-insulated stainless steel, to banish lukewarm drinks forever

Designed for everyday adventures, the 21 oz Standard Mouth bottle from Hydro Flask is their mid-range and most versatile product. Small enough to fit in a rucksack side pocket - or your car’s bottle holder - but carrying over 600 ml of liquid, the 21oz bottle is the perfect companion for your daily travels. Plus, since it’s made without BPA chemicals, you can keep re-using it worry-free.

      • Hydro Flask offer a lifetime guarantee, meaning their products are sustainable through their longevity
      • BPA-Free and Phthalate-Free
    • 21 oz standard mouth diameter water bottle with Standard Flex Cap
    • Double-wall vacuum insulation means no burned fingers from hot beverages or condensation from ice-cold drinks
    • TempShield insulation keeps beverages cold up to 24 hours and hot up to 12 hours
    • Standard-mouth opening is 4.6 cm (1.8 inch) in diameter, making it easy to fill the bottle with coffee, tea or sports drinks
    • Tough, food-grade 18/8 stainless steel construction is resistant to bacteria and odours Versatile, middle-of-the-road size
    • Bottle fits in most car, bike and stroller cup holders and water bottle cages
    • Colour: Graphite
    • Volume: 621 ml / 21 fluid ounces
    • Height: 23.88 cm / 9.4 inch
    • Diameter: 7.29 cm / 2.87 inch
    • Mouth diameter: 4.85 cm / 1.91 inch
    • Weight: 320.3 g
    • Material: Stainless steel
    • Bottle opening: Medium
    • Cap type: Screw cap
    • BPA Free
    • Hydro Flask cannot guarantee against leaks when the bottle is filled with carbonated beverages; keep the bottle upright.


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