FITLY Soft Flask - Shrink As You Drink Soft Water Bottle for Hydration Pack - Folding Water Bottle Ideal for Running, Hiking, Cycling, Climbing & Rigorous Activity

I don’t like to carry a water bottle when I go on a run. At events and our local track, there are water stops along the course, but I like to have a little water with me so I can hydrate to my thirst. This bottle is absolutely perfect for that need. It fits in my pocket and does not leak and lets me get small boosts of hydration between water stops. It does not hold much, but for me it is perfect for hydration supplementation during a 10k. If this is all the water you have / available, it would not be big enough, but for races where you know there will be water stops offered, this bottle is great. There was a slightly plastic oder when I first got it, but it went away quickly and the water never tasted off.Pros: easy to fill, easy to use while running, great size for extra water, easy to clean, pocket sizedCons: slightly plastic smell (dissipated quickly for me)Bottom line: great way to supplement water on a running course with water already available.

When I first got into running long distance a few years ago I tried so many iterations of bottles - this by far is my favorite! It’s a solid design, holds just the right amount of water for me and fits in my run vest so I can be hands free, plus it doesn’t break the bank. I’ve also weirdly enough put warmer water in it for winter running! They last a long time - the spout makes the water easy to access and if I don’t bring my vest it’s light and hand sized, making it easy to carry. All in all great functionality. Also their customer service is super friendly and knowledgeable! Rare to have a person on the line AND one who’s friendly.

The size and function of this is just right. But, as others have said, there is a taste/smell that I can't seem to eliminate. I tried vinegar and baking soda, and then tried extended soaks with the same. I managed to decrease the taste and smell somewhat. The flask is so portable and well-designed that I just use it and try to overlook the taste.

I have been searching for a bottle to carry with me on short runs for a loooong time. I don’t like to carry things in my hand so my only option seemed to be the belts which carry the bottles. I have one that I love for long runs which has a small bottle on each side of the belt and one I recently purchased which only has one bottle carrier. But still it felt like someone needed to design something better. Well...someone did!!! This small bottle fits into my side pocket and I don’t even notice it while running. There is no fiddling with caps or pushing or pulling....it took me a minute to realize you just squeeze the tip with your teeth and just like that the water comes out. When I read the reviews I thought I would not like the squeezing part and was concerned about the quality of the tip and how long it would last? Surprisingly it’s true what other reviewers wrote, it really is better quality than expected. I purposely waited to write this review so that I have enough time to use the bottle first. There is no swooshing sound of water either. I also love the fact that I can drink while running with ease. Perfect size for 3-5 miles! Just buy it.after using the bottle enough times and

Expert skier who previously used water bladders with tube fed through the backpack for hydration while skiing. On cold days, the tube would freeze to my dismay. Nothing I could do to fix this issue worked. I tried insulated tubing without success. I then started carrying a 500 mL bottle of water each day in my thigh bib pocket which worked in terms of not freezing, although I found the shape of the bottle uncomfortable. I ordered this soft flask at the 400 mL size as I thought it would fit in my pocket and yes, it does. I fill it when I go in for a brief break and it is fine for resort use. Would this work for backcountry? Well, personally 400 mL isn't enough water for me for more than a few hours so I think this will have to stay for resort use. But for what I need, it works perfectly. The reason I gave it 3 rather than 5 stars is the taste of the water... despite filling it initially with hot, soapy water to clean, I still taste would I would best describe as the inside rubber/plastic taste/smell of a pool toy. If you have ever blown up a pool toy, you know what I mean. With time it has been getting better but the taste remains. On the product it is clearly advertised that the product is safe for use with claims of product safety by FDA, but who knows...

This one 5 Oz is perfect size for half marathon. It fits right in my running shorts. Great to wash out mouth after taking energy gels.

Ordered 3 five ounce bottles. Worked good for ten days. One morning I rinsed and refrigerated them so they would be colder. That night I, very bad reaction to the tip, tongue and throat swelled up and I couldn't breathe. What are they made of that would cause such a horrible reaction? Very scary!!! Do not buy!!

Good product

I love using soft water bottles because they don't take up much space. They are lightweight, flexible and collapsable which is ideal for when I go running! And this one fits perfectly into my waist bag :) It's also leakproof and I did not notice any bad taste in my water plus I really like this type of mouthpiece!

Hay que presionar con los dientes la boquilla de goma para beber... No lo explican en la descripción del producto, del resto bien

La usé para geles energéticos y lo lleve conmigo en el mar. Funcionó perfectamente, no se derramó el gel ni tampoco entró agua salada.

Ottimo prodotto lo puoi tenere intasca mentre corri o in una mano e puoi idratarti tranquillamente quando ne senti il bisogno, tanto per una virsa di 50 minuti 150ml sono pure tanti!

This running portable water bottle is excellent! It’s lightweight, easy to carry, and fits comfortably in my hand while I run. The design makes it simple to take quick sips without slowing down, and it doesn’t leak at all, even during longer runs.I really like how compact it is—perfect for workouts, jogging, or walking. The material feels durable and high-quality, and it’s easy to clean after use. It keeps me hydrated without being bulky or uncomfortable.Overall, this water bottle is a must-have for runners and anyone on the go. Super convenient, reliable, and well-designed. Highly recommended! 🏃‍♂️💧⭐