Hydro Flask 21 oz. Standard Mouth Insulated Bottle w/ Sport Cap

The 21 oz. is the perfect go-anywhere companion on your busiest days. It stashes easily in a small shoulder bag, your pack’s side pocket or your car cup holder, and holds enough to keep you going for hours without weighing you down.

  • 18/8 pro grade stainless steel bottle
  • Sport cap for one-handed refreshment on-the-go
  • TempShield™ protected
  • Keeps cold up to 24 hours
  • Keeps hot up to 6 hours
  • Versatile, middle-of-the-road size
  • Easy to transport
  • BPA-free and phthalate-free
  • Manufacturer's lifetime warranty
  • Compatible with Hydro Flask® Standard Loop Cap
  • Mouth diameter: 1.91"
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Hydro Flask® provides users the freedom to go anywhere with the assurance that their cold liquids will stay cold for 24 hours, and hot liquids will stay hot for 12 hours.
Description Capacity Dimensions Weight Price  

S21ST415 - Pacific

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Hydro Flask 21 oz. Standard Mouth Insulated Bottle w/ Sport Cap
S21ST415 - Pacific

SKU #:
03052669
UPC #:
810497024171
Capacity:
21 fl. oz.
Dimensions:
8-7/8" x 2-7/8"
Weight:
10.4 oz.
Material:
18/8 stainless steel
21 fl. oz. 8-7/8" x 2-7/8" 10.4 oz. $35.95

S21ST001 - Black

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Hydro Flask 21 oz. Standard Mouth Insulated Bottle w/ Sport Cap
S21ST001 - Black

SKU #:
09685587
UPC #:
810497024164
Capacity:
21 fl. oz.
Dimensions:
8-7/8" x 2-7/8"
Weight:
10.4 oz.
Material:
18/8 stainless steel
21 fl. oz. 8-7/8" x 2-7/8" 10.4 oz. $35.95

S21ST306 - Olive

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Hydro Flask 21 oz. Standard Mouth Insulated Bottle w/ Sport Cap
S21ST306 - Olive

SKU #:
03957891
UPC #:
817318023245
Capacity:
21 fl. oz.
Dimensions:
8-7/8" x 2-7/8"
Weight:
10.4 oz.
Material:
18/8 stainless steel
21 fl. oz. 8-7/8" x 2-7/8" 10.4 oz. $35.95

S21ST435 - Mint

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Hydro Flask 21 oz. Standard Mouth Insulated Bottle w/ Sport Cap
S21ST435 - Mint

SKU #:
03957909
UPC #:
817318023252
Capacity:
21 fl. oz.
Dimensions:
8-7/8" x 2-7/8"
Weight:
10.4 oz.
Material:
18/8 stainless steel
21 fl. oz. 8-7/8" x 2-7/8" 10.4 oz. $35.95

S21ST611 - Lava

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Hydro Flask 21 oz. Standard Mouth Insulated Bottle w/ Sport Cap
S21ST611 - Lava

SKU #:
03957917
UPC #:
817318023269
Capacity:
21 fl. oz.
Dimensions:
8-7/8" x 2-7/8"
Weight:
10.4 oz.
Material:
18/8 stainless steel
21 fl. oz. 8-7/8" x 2-7/8" 10.4 oz. $35.95

S21ST625 - Flamingo

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Hydro Flask 21 oz. Standard Mouth Insulated Bottle w/ Sport Cap
S21ST625 - Flamingo

SKU #:
03957925
UPC #:
817318023276
Capacity:
21 fl. oz.
Dimensions:
8-7/8" x 2-7/8"
Weight:
10.4 oz.
Material:
18/8 stainless steel
21 fl. oz. 8-7/8" x 2-7/8" 10.4 oz. $35.95