Azarxis TPU Soft Flask Collapsible Water Bottles BPA-Free 250ml 350ml 500ml 600ml for Hydration Vest Pack Running Hiking Cycling Climbing

The insulated jacket comes off easily for cleaning. The bottle itself is more of a "bladder" and collapses flat when not full. A real lifesaver for me because I have vocal cord dysfunction, and a sip of slightly salted water while running will keep the throat open for breathing. Good price, nice features like reflective patterns in the jacket, a hand strap, and a second zippered pouch for light belongings.

Bought these to run my 108K ultra, and they worked great, easy to fill, and lightweight. I've used them on 20k, 50k, and 100k runs, as well as all-day hikes, and they are great. I like them because they have twice the capacity of my stock bottles in my running pack. They are tall enough to drink while still in the pack and easy to pull out for a quick refill at the aid stations or in the cool mountain streams. So far so good.

Super handy my ONLY wish is that the zipper for the bottle compartment were longer so a full bottle could fit in. It’s a bit hard to squeeze a bottle and an iPhone into but has worked fine for me, and holds gels and fuel great when my phone is in a pocket.

durable, light weight and even has a pocket I just discovered. Nice design, I probably should have known but I thought both sides unzipped to expose the bladder but nope one side is a pocket! Love that you can squeeze the air out so it does not slosh around when running. I have had several compliments. Only complaint is it is easy to overfill so I often make a mess but that is no fault of theirs.

Excelente compra, resistentes y la medida necesaria para llevar liquido. Los recomiendo absolutamente.

I purchased this used. I was disgusted when I received it to find what looked like a tea bag inside. I washed it well to try and get it clean but it stained the bladder and wouldn't come off. I promptly returned it and ordered a "new" one. I like the design and that it fit in my daughter's cross country bag easily.

This functions as it should but there are some drawbacks, and for what it's worth one of those is significant in my opinion. 1. The bite valve (rubber piece) is small and not as thick like those found on typical bite valves from osprey, platypus, camelback, solomon, etc. 2. Most significant drawback for me is that the this has a narrow flow of water compared to a big wide flow, so water intake is SLOW. Think about a regular water/soda straw vs. a boba straw. This is important for me when trail running as when I'm paced and my breathing is rhythmic, a big flow water intake allows me to collect a good portion of water in one to two strides and then consume it on the next two strides. With this one, it disrupts my pace and rhythm as it takes at least 4 strides to collect the same amount of water to consume it on the next few strides. I typically follow a 2-2 stride (inhale 2 strides and exhale 2 strides) and as the run gets more challenging and my heart rate goes into sustained 180+BPM, this becomes even more challenging as I breathe more heavily and move into a 3-3 stride, but it takes so long to get water and i feel like I'm suffocating trying to get water quickly enough. I guess i could learn and adapt to getting smaller sips of water, rather than gulps, but what I've been doimg works great for me. This should be ok for easy recovery runs but I don't think it's ideal for folks who like to take satisfying gulps of water. One awesome positive is that this had NO weird plastic taste to it! I've had all the big brand hydration bladders and flasks and they all had that awful plastic taste to it. This one did not! Mind you I only did the usual wash with warm water and soap method and that was enough.

Finally a bottle that is easy to fill and close the lid w/o losing the drink!