Hydro Flask Standard Mouth Flex Cap 21 oz Bottle

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Color: Goji
Sale price£31.46 Regular price£34.95


Keep life moving with the Hydro Flask 21 oz (621 ml) bottle and Standard Flex Cap. Just the right size to keep you hydrated whilst still being able to stash easily into a small shoulder bag, your pack’s side pocket or your car cup holder. Not surprising then that the Hydro Flask Standard Mouth 21 oz bottle is one of the bestselling water bottles for adventurers.

The Hydro Flask Flex Cap is also insulated, insuring all round temperature retention. The bottles are made with 18/8 pro-grade stainless steel to ensure pure taste and no flavour transfer – and the durable construction stands up for whatever life brings.

Featuring Hydro Flask's unique  TempShield® double-wall vacuum-insulation protects temperature for hours to keep cold drinks icy cold and hot drinks piping hot, so you can stay refreshed whilst on any adventure.


  • TempShield™ insulation eliminates condensation and keeps beverages cold for up to 24 hours and hot for up to 12 hours
  • Versatile, middle-of-the-road size
  • Fits Most Backpacks and Car Cupholders
  • 18/8 Pro-Grade Stainless Steel
  • BPA-Free and Phthalate-Free
  • Available in a range of colours
  • Colour Last™ Powder Coat
  • Lifetime Warranty


  • Volume: 621 ml / 21 oz
  • Weight: 340 g / 12 oz
  • Mouth Diameter: 4.9 cm
  • Bottle Diameter: 7.3 cm
  • Bottle Height: 23.9 cm

Base Camp Food are an official UK retailer for Hydro Flask. 

To view our complete Hydro Flask collection, please click here.

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