18oz Wide Mouth Flex Straw & Boot - Kids'
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Hydro Flask 18oz Wide Mouth Flex Straw & Boot
Our kid’s 18 oz stainless steel water bottle is the perfect insulated bottle for school, family hikes and everyday hydration. The straw cap makes sipping easy, and the double-wall stainless steel construction keeps cold drinks cold for up to 24 hours.
Details
- Item #HYFZ04W
- Material
- stainless steel
- Volume
- 18oz
- Lid
- screw-on carrying handle
- Valve
- flip-up straw
- Dimensions
- [H x D] 9.1 x 2.9in
- Claimed Weight
- 11.2oz
- Activity
- casual
- Manufacturer Warranty
- limited lifetime
Reviews
Q&A
What do you think about this product?
Overall Rating
4.5 based on 545 ratings
Review Summary
Customer Images
Here's what customers have to say
The 18oz water bottle is a well-received option for children. Customers appreciate the quality construction, long-lasting temperature retention, and customization options. However, some users have experienced leaks or issues with the straw. Overall, the water bottle is a popular choice among parents and grandparents for its functionality and appeal to young users.
AI-generated from the text of customer reviews.
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Selecting an option will reload the available reviews on the pageJuly 15, 2025
One Happy Momma :)
[This review was collected as part of a promotion.] Hydro Flask for kids is a life hack, hands down! It really is leak proof. All my children will be getting their own customized bottle! Thank you <3
Originally reviewed on hydroflask.com
July 10, 2025
My granddaughter loves her bottle!
[This review was collected as part of a promotion.] I got my granddaughter a bottle because her previous cap broke and I didn’t want to bother with the warranty. The saddest part is she lost her brand new bottle on a recent camping trip after only having it less than a week and she cried all the way down the mountain Peak and it was too difficult for anyone to go back to look for it. I replaced it with another brand new one and she’s so excited.
Originally reviewed on hydroflask.com
July 10, 2025
Daughter loved it
[This review was collected as part of a promotion.] Love it! I wish it came with a boot for the price but my daughter was very happy with it. Continues making matching bottle caps in fun colors!
Originally reviewed on hydroflask.com
July 9, 2025
Poor quality
[This review was collected as part of a promotion.] Hydro has really decreased the quality since I last purchased. The bottle gets dented easily and the paint rubs off- it’s too bad really, I was such a fan
Originally reviewed on hydroflask.com
July 5, 2025
I love the 18 ounce
[This review was collected as part of a promotion.] I love the 18 ounce size, the wide mouth and the engraving was beautiful. I bought it specifically for my trip because it fit my backpack. I’ll have to get another one when I return. I left it in my Uber yesterday!😔
Originally reviewed on hydroflask.com
July 3, 2025
So Disappointed
[This review was collected as part of a promotion.] These cups are insanely adorable and the size is perfect for my three year old. The silicone straw part however is not made to fit tightly into the lid though so these leak a lot. I bought two cups and they are both this way so it’s a design flaw. I compared the new straw lids to mine that’s very old at this point and the part is just not made the same, much more flimsy and not fitted. It seems like they got a new manufacturer and either missed the fact that these don’t fit well or just ignored it. It’s annoying though as I only really like Hydroflask compared to the many insulated bottle brands but if they continue to cheap out I may have to move on.
Originally reviewed on hydroflask.com
July 1, 2025
Super Nice! Love it!
[This review was collected as part of a promotion.] I love it and my little granddaughter loves it! so much so happy that I got it for her!
Originally reviewed on hydroflask.com
June 30, 2025
Perfect size and color
[This review was collected as part of a promotion.] I'll admit, even though this is a kids bottle I (an adult) use it as well because this is for when I don't want something too large or heavy to take with me on the go.
Originally reviewed on hydroflask.com
June 27, 2025
Defective bottle boot
[This review was collected as part of a promotion.] I purchased 2 bottle and the bottle boot that came with one of the water bottles was defective. The permanent marker smeared each time I tried to write on it. This issue is only seen on one water bottle but hydroflask would not send a replacement boot claiming it is not part of the warranty. Disappointed.
Originally reviewed on hydroflask.com
June 24, 2025
Love this!
[This review was collected as part of a promotion.] Love this for my toddler. It’s our second one. No drips, easy for her to open and carry. And the rubber shoe on the bottom minimizes the water bottle noise.
Originally reviewed on hydroflask.com
Do you have a question about this product?
November 20, 2022
Hello, we bought two of these bottles for our boys about a year and a half ago. The gray silicone part on one of the lids fell out. Is it possible to purchase a replacement for this part? Thank you
Originally reviewed on hydroflask.com
June 29, 2022
Is peony red or pink?
Originally reviewed on hydroflask.com
February 1, 2022
Hi! I purchased this bottle and the little gray (silicone?) part that prevents spilling has come out. Is it possible to get a replacement of this part? We LOVE this bottle and are so sad this piece is gone!
Originally reviewed on hydroflask.com
August 18, 2021
I would like to buy a replacement straw for this water bottle. Do you sell them?
Originally reviewed on hydroflask.com
July 31, 2021
Does the straw lid have an actual straw that extends down into the bottle, or is it just an extension off the top?
Originally reviewed on hydroflask.com
July 22, 2021
Kind of silly but what is best to write their name with on the tag? I used a sharpie but it rubbed off turning it black (talk about disappointed kids). Then a pen over that but same thing. Thanks!
Originally reviewed on hydroflask.com
June 18, 2021
I bought a kid's wide mouth by accident, didn’t look at details, says not for hot beverages…any reason it can’t be used by adult for hot drinks with wide mouth flex sip lid?
Originally reviewed on hydroflask.com
June 7, 2021
Is this good for a toddler to drink milk out of?
Originally reviewed on hydroflask.com
May 7, 2021
How do I order replacement lids for the kid size bottle?
Originally reviewed on hydroflask.com
April 5, 2021
Do you sell replacement pieces? The top of my kiddos water bottle was chewed, and I'd like a new one.
Originally reviewed on hydroflask.com