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Hydro Flask 21 oz Double Wall Vacuum Insulated Stainless Steel Sports Water Bottle, Standard Mouth with BPA Free Sport Cap

3.9 out of 5 stars 136 customer reviews

Price: $35.95 & FREE Shipping. Details
Black
21 oz (621 ml) Standard Mouth Size Chart
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  • DESIGN IN MIND: Standard Mouth is ideal for sipping, while still accommodating ice cubes. Also, safety is top-of-mind, as the bottles are made out of non-toxic BPA-free plastics & 18/8 food-grade stainless steel.
  • SLIP-FREE GRIP: Unlike other leading water bottles, Hydro Flask has a powder coat, which gives you a solid grip. The Powder Coat works with the premium TempShield insulation, which prevents condensation from forming on the outside of the bottle, to give you exactly what you want in an everyday refreshment delivery system.
  • JUST THE RIGHT SIZE: Meets your everyday hydration needs in one container, all while keeping it piping hot or ice cold and fitting comfortably and conveniently in your hand or your vehicles' cup holders and bicycle bottle racks.
  • INSULATION INNOVATION: The double-walled, vacuum insulated TempShield Insulation, the same technology used in all Hydro Flask products, will ensure that your beverage of choice maintains its temperature for many hours to come. Hot drinks up to 6 hours, and cold drinks up to 24 hours.
  • ONE-HANDED REFRESHMENT: From mountain trails to morning yoga class, the Standard Mouth Insulated Sport Cap lets you hydrate one-handed and on the fly. It’s the first insulated sport cap specifically designed to keep water in your Hydro Flask bottle ice cold, sip after sip.

Fitness sports and outdoor

Frequently bought together

  • Hydro Flask 21 oz Double Wall Vacuum Insulated Stainless Steel Sports Water Bottle, Standard Mouth with BPA Free Sport Cap
  • +
  • Hydro Flask Double Wall Vacuum Insulated Stainless Steel Sports Water Bottle, Wide Mouth with BPA Free Straw Lid
  • +
  • Flaskars Straw Lid Fits Hydro Flask Standard Mouth Sport Water Bottle
Total price: $90.25
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From the manufacturer

Insulation Innovation.

Used in every Hydro Flask made, TempShield is the double wall, vacuum insulated technology that guards the temperature of your drink. Bring ice water with you in the morning, and we promise you’ll still have ice in the afternoon. Hectic morning getting in the way of your coffee sipping? No problem. Hydro Flask will keep it hot until you’re ready. There is also no condensation or heat transfer to the outside of the bottle, ever.

Standard Mouth with Sport Cap Standard Mouth with Flex Cap Wide Mouth with Straw Lid Wide Mouth with Flex Cap Tumbler with Press-In Lid
24 Hours Cold & 6 Hours Hot
Leak Proof
Fits in most bicycle bottle racks & car cup holders
Slip-Free Powder Coating
BPA, Phthalate, and Toxin-Free
Flex Caps Sport Cap Straw Lid Hydro Flip Lids Press-In Lids
Standard Mouth Compatible
Wide Mouth Compatible
Tumbler Compatible
Insulated
Leak Proof
One-Hand Use
BPA, Phthalate, and Toxin-Free

Product description

Hydration on the go. The 21 oz vacuum insulated Hydro Flask is our most versatile medium-sized water bottle and one of our most popular. It is the perfect go-anywhere companion on your busiest days. It fits nearly any size ice cube and is easy to drink from on the go. With a convenient 21 oz capacity and a moderately wide mouth opening, it's great for sports drinks, juice, smoothies or water. 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. This flask is as diverse as you!

The 21 oz insulated Hydro Flask is made from 18/8 food-grade stainless steel, and the double wall vacuum insulation provides top notch insulation power, keeping cold liquids icy cold for up to 24 hours and hot liquids steaming hot for up to 6 hours.

Hydro Flask is proud that all our products are BPA-free, recyclable and backed by a lifetime warranty. Look for the H-guy and Hydro Flask logo to ensure you’re getting the market’s premium insulating beverage bottle.

Features:

Easy to transport

Versatile, middle-of-the-road size

Standard Mouth Opening

TempShield(TM) Protected Double Wall Vacuum Insulated

Keeps Hot up to 6 Hours, Keeps Cold up to 24 Hours

Durable, sweat-free powder coat finish (except for the Stainless option)

BPA-Free

18/8 Stainless Steel

Lifetime Warranty

compatible Lids: Hydro Flask Sport Cap

Parks for All - With Hydro Flask's new giving program, Parks for All, they are focusing on one overarching goal: supporting the development and maintenance of public green spaces everywhere

Hand wash only with hot, soapy water. Rinse and dry, and it's ready for adventure


Product details

Color: Black | Size: 21 oz (621 ml) Standard Mouth
  • Product Dimensions: 2.9 x 2.9 x 9.4 inches
  • Shipping Weight: 8.8 ounces (View shipping rates and policies)
  • ASIN: B01GW2G92W
  • Item model number: S21ST001
  • Average Customer Review: 3.9 out of 5 stars 136 customer reviews
  • Amazon Best Sellers Rank: #416 in Sports & Outdoors (See Top 100 in Sports & Outdoors)
  • Product Warranty: For warranty information about this product, please click here

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Customer Questions & Answers

136 customer reviews

3.9 out of 5 stars

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August 20, 2017
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June 23, 2017
Color: BlackSize: 21 oz (621 ml) Standard MouthVerified Purchase
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March 8, 2018
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April 5, 2018
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July 28, 2018
Color: BlackSize: 21 oz (621 ml) Standard MouthVerified Purchase
March 1, 2018
Color: BlackSize: 21 oz (621 ml) Standard MouthVerified Purchase
July 26, 2018
Color: BlackSize: 21 oz (621 ml) Standard MouthVerified Purchase
August 15, 2018
Color: BlackSize: 21 oz (621 ml) Standard MouthVerified Purchase

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Hydro Flask Stainless Steel Vacuum Insulated Sports Water Bottle with Cap, Black, 21 Ounce
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