What Makes it Mighty?

  • made from high quality 304 grade stainless steel
  • bPA-free, Lead-free, PVC-free, phthalate-free
  • double wall vacuum insulated
$3.89 donated to your school

21oz Standard Mouth Vacuum Insulated Stainless Steel Water Bottle by Hydro Flask SKU: HF21oz

Price: $25.95
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4 Reviews | Overall Rating: Add Your Review

The 21 oz is ideal for taking on the weekend bike ride or hike to keep your fluids cold. Or take it up the mountain and have coffee, hot cocoa, or soup waiting for you at the end of the day.

The standard mouth features a larger opening than our original narrow mouth bottle. It is ideal for coffees, teas, mixing sport drinks, or just for those who need to take in more hydration, more quickly. As with all our bottles, they fit perfectly in most car, bicycle, and stroller cup holders and water bottles cages.

Our stainless steel water bottles were developed to perform in every environment. Each Hydro Flask is hand cast from double wall vacuum insulated food grade 18/8 stainless steel, therefore they are BPA-Free and resistant to bacteria and odors. Our double wall vacuum insulation technology allows Hydro Flasks to keep contents hot for 12 hours and cold for 24 hours.

  • Patented Standard Mouth Size
  • Double Wall Vacuum Insulated
  • Keeps Hot 12 Hours
  • Keeps Cold 24 Hours
  • BPA-Free
  • 18/8 Stainless Steel
  • Signature Matte Finish
  • Lifetime Warranty
Meticulously Handcrafted in China
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Customer Ratings and Reviews

Overall Score

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Reviews and Ratings
Review by Anonymous on 5/17

When you make this in the USA, contact me and I'd love to buy this product. Until then, no way! Here's my email, in hopes that you will review where you manufacturer your products. Jewelynx@live.com

Review by Anonymous on 1/9

I love everything about it!! the color ,how it maintains the water cold for almost 12 hours,the easy grip bottle cap.

I recommend it to everyone

Review by Anonymous on 9/30

I love this water bottle took it to work at 6:30am still cold when I left at 12:30pm. Awesome product would buy again!

Review by Anonymous on 8/17

I LOVE this water bottle! I took it on a 5 hour hike in hot weather, and my water was cool and refreshing during the entire hike, and the bottle stayed nice and dry on the outside. Perfect!!

About Hydro Flask

We love Hydro Flask's Mission: Free the world from lukewarm water, produce the highest quality flasks, provide excellent customer service and make a difference in our local community and beyond. Hydro Flask is based in Bend, Oregon.

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About MightyNest
We make it easy for families to create a healthy home. Each of our 1000+ products has been thoroughly researched to be free of concerning chemicals, and hand-picked for its quality and design. With products for the whole family, ranging from kitchenware to reusable lunch gear to skincare, it is truly better living made easy.

Where living healthy supports your school.