Water Bottles Buying Guide: How to Choose

Great for short trips, this mini Hydro Flask water bottle is perfectly sized to pop in your pocket or tuck in a lunch box. A removable FlexClip™ bottle strap lets you easily slip it on a bag or belt.
Imported.
View all Hydro Flask Water Bottles| Best Use | Travel |
|---|---|
| Liquid Capacity (L) | 0.39 liters |
| Liquid Capacity (fl. oz.) | 13.5 fluid ounces |
| Dimensions | 2.45 x 7.7 inches |
| Fits In Cup Holder | Yes |
| Water Bottle Material | Stainless Steel |
| BPA Free | Yes |
| Insulated | Yes |
| Bottle Opening | Narrow |
| Cap Type | Screw Cap |
| Weight | 7.04 ounces |
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[This review was collected as part of a promotion.] I am so excited to have all three sizes of the mini and micro hydros. I use them all the time! I also love the new cloud pink color. It is beautiful!
[This review was collected as part of a promotion.] This is a much more practical “micro” size than the original, perfect for smaller bags or when you know you’ll be able to refill. I must’ve misunderstood what “removable flex handle” meant, because I hoped to be able to clip this onto bags without the carabiner I’ve been using, but it seems to be a customization thing. I’ve been using a 12oz coffee tumbler this way and I hoped to eliminate the carabiner, plus this bottle is slimmer and fits in more places. A tiny boot, a straw option, and DEFINITELY a clip-on cap would make this bottle absolutely perfect. Oh, and cloud pink is very pretty in person! Just pale enough to be neutral.
[This review was collected as part of a promotion.] I was in desperate search for a small water bottle that would force me to get up and refill it so I would drink more water. I bought the 200ml a few months ago and loved it! But then Id fill the small one up with my espresso or tea and didnt have a vessel for water anymore. I was tempted to buy the 400ml micro hydro but the colors weren’t appealing to me when they first released. Hydroflask released more colors and I immediately bought the 400ml in oat to match my 200ml. Now I have both a warm beverage and my water to stay hydrated. Its wonderful not having a bulky water bottle in my bag anymore. There are smaller waterbottles but not as good a quality or trustworthy as Hydroflask.
[This review was collected as part of a promotion.] I love this size. The 200mL was ok to carry around but a bit to small. This 400mL is just perfect with the right amount of fluid for my errands and for my purse or whatever bag I'm using for the day. I've decorated my 400mL with waterproof stickers to give this HydroFlask added flair.
[This review was collected as part of a promotion.] Perfect travel size. Easily fits in the side pocket of a backpack. Love the harbor blue color and the engraving looks great!
[This review was collected as part of a promotion.] I'm super happy they've made a bottle a little bigger than the 200 mL. I bought the 300 and 400 mL and have been swapping them out in my mini backpack, depending on how far I'm walking. They are the perfect size to quench my thirst without taking up half the space in my bag, and they retain the leak proof caps that let me throw them in my bag without concern for keeping them upright. The only drawback is that my bottle brush doesn't fit inside them for cleaning so I'll have to look for a smaller one.
[This review was collected as part of a promotion.] the 400ml is about 13fl oz and is an awkward size, because now the micro feels like it’s getting too big. The 200 and 300ml are perfect for sips and on the go especially with a smaller bag. However, the 400 is a little in between size - at that point, I rather carry a full size 24/32 oz bottle. Also, the quality has been getting worse, came with a bottle that was scuffed and scratched, even though it was supposed to be brand new.
[This review was collected as part of a promotion.] Great bottle really cute. It’s fits well in my lunch bag and is ferry handy. Bottle is well made and does not leak. Easy to clean with bottle brush.
[This review was collected as part of a promotion.] Love the larger size. Got this and the 300 ml in the pop Star pink and cloud pink. The cloud pink is a very light lavendar and the pop star pink is closer to a neon orange. I don’t like the new colors. No neutrals and I’m not a Purple person. Will keep the 400 ml for the size but please offer other more neutral colors or the same colors as the 200 ml size.
[This review was collected as part of a promotion.] I have an elderly friend who buys bottled water and is concerned about microplastics. She said she would switch to a reusable water bottle if I could find her one between 12 and 14 ounces. I searched around and voila, the Micro Hydro 400! I love my Hydroflasks and my friend is getting this one as a birthday gift in a few weeks!