TRIWONDER TPU Soft Folding Water Bottles BPA-Free Collapsible Flask for Hydration Pack – Ideal for Running Hiking Cycling Climbing (250ml/8.45oz – Pack of 2)
$ 16.99
Price: $16.99
(as of Mar 04, 2025 10:30:59 UTC – Details)
Product Description
TRIWONDER Soft Flask
The soft bite valve provides a higher flow rate for easy drinking and a gentle bite.
It is foldable and easy to carry, fitting perfectly into your running belt or even your pants or jacket pocket.
Ideal for camping, mountaineering, hiking, cycling, running, jogging, gym workouts, summer camp trips, and other outdoor activities.
The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked.
HYDRATION EQUIPMENT EQUIPPED
Material
TPU + Silicone
Material
TPU + Silicone + ABS
Material
TPU + Silicone
Volume
250ml/500ml
Volume
350ml/600ml
Volume
450ml
Weight
27g/33g
Weight
53g/58g
Weight
36g
You can take it with you anywhere, very convenient.
DETAILS
Silicone bite valve for easy drinking.
Soft material that can be compactly folded.
Detachable nozzle for easy cleaning.
High-flow bite valve with automatic sealing, no leakage.
Running Water Bottle
Collapsible Water Bottles
Soft Flask
Foldable Water Bottle
MORE HYDRATION PACK STYLES
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Customer Reviews
4.5 out of 5 stars 5,999
4.5 out of 5 stars 5,999
4.5 out of 5 stars 5,999
4.4 out of 5 stars 895
4.4 out of 5 stars 839
4.2 out of 5 stars 4,230
4.2 out of 5 stars 1,626
Price
$37.99$37.99
$37.99$37.99
$27.99$27.99
$29.99$29.99
$24.99$24.99
$17.99$17.99
$16.99$16.99
Material
Nylon Elastic Fabric
Nylon elastic fabric
Nylon + Polyester
Polyester
78%Coolmax, 18%Nylon, 4%Lycra
TPU
TPU
Size ( L x H )
15.35 x 16.14 in
11.02 x 16.93 in
13.8 x 15.8 in
15.7 x 15.7 in
S/M/L
3.15 x 9.68 in
7.1 x 15.4 in
Net Weight
250g
190g
130g
115g
30g
33g
180g
Recommended Bust
31.5in-47.2 in / 80cm-120cm
26.8in-51 in / 68cm-130cm
30.7in-43.3 in / 78cm-110cm
35.4in-45.3in / 90cm-115cm
—
—
—
Compatible Phone Size
5.5 inches
5.5 inches
5.5 inches
6.8 inches
—
—
—
Compatible Hydration Size
350ml Bottle / 2L Bladder
600ml Bottle / 1.5L Bladder
250ml Bottle
500ml Bottle
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—
—
Capacity
5.5L(6 pockets)
5L(8 pockets)
2.5L (4 pockets)
2.5L(7 pockets)
—
250ml/450ml/500ml
1.5L/2L/3L
Color
Blue, Grey, Rose Red
Black, Blue
Blue, Green, Grey, Rose Red
Black, Blue, Red
Black, Blue, Green, Purple
Blue, Grey
Blue, Green
Adjustable
✔
✔
✔
✔
✘
✘
✘
Breathable
✔
✔
✔
✔
✔
✘
✘
Safety Promise: Made of Food-Grade TPU material, 100% BPA & PVC Free, the soft water bottle is tasteless and eco-friendly.
Space Saving: The soft water flask is compact and built for a long life for durable use. The running flask stands upright when it full and shrinks in the min volume while empty, no burden for sports.
Easy Drink: Light squeeze gives ample hydration, high-flow bite valve auto-seals after each sip, without leaking. Convenient collapsible water bottle for daily, travel or outdoor sports.
Practical: The folding water bottle with straw/nozzle can be frozen and chilled overnight, easily get a refreshing beverage on the hot day. ( Recommended used temperature: 0 – 40 ℃ )
Easy Carrying: Ultra-light hand water bottle is easy to fold and carry. It can fit easily in most hydration vest, belt or pack pockets. Great soft hydration flask for men, women and kids.
Customers say
Customers find the bottles fit well in packs and running vests. They work well with standard mouthpieces and bite valves. The bottles are comfortable to hold and have a nice size. However, some customers dislike the taste. There are mixed opinions on leakage, water retention, and overall quality.
AI-generated from the text of customer reviews
13 reviews for TRIWONDER TPU Soft Folding Water Bottles BPA-Free Collapsible Flask for Hydration Pack – Ideal for Running Hiking Cycling Climbing (250ml/8.45oz – Pack of 2)
Add a review

$ 16.99
Doug J –
My new favorite running waterbottles!
These are excellent handheld waterbottles and are my new go-tos for my long runs. They hold the perfect amount of water (500ml) and work well with one bottle in each hand. The fabric carrier that holds the water bottles are extremely lightweight, comfortable, and allow you to keep the bottles secure without requiring you to grip the bottle tightly (saving energy). The hand hole is adjustable to keep the bottle snug as you empty the bottle, and the thumb hole is useful for keeping the bottle secure in your hand without actively squeezing it. The carrier also has a separate pocket for storing keys, cash, etc. I haven’t tried carrying a phone in this (more weight than i prefer to lug around on my runs) but it appears it could accommodate one (maybe not the largest though.) The bite valve is very secure and doesn’t leak. Great design as a squeeze valve would surely leak- this one requires a light bite while you squeeze the bottle to work. Overall a great performing design and an excellent price.
C.A. –
Great value and quality
Perfect for cold weather runs, hot yoga, and sight seeing.
I bought this bottle to have a light weight water bottle that could also double as a wallet so I can keep my car key and valuables with me during group exercise classes and sightseeing. I donât like to rely on lockers for anything that would be upsetting to lose.
Straps and design. There is ample reflective strips on the hand strap and front of the bottle. The reflective material is sewn so that there are loops to attach a carabiner. The hand strap is one of the most comfortable Iâve used. Soft lining to prevent chaffing and breathable mesh with a comfy thumb hole. The blue color with lime green accents is very attractive.
Pocket. Can fit chapstick, car key, tissues, a few dollars, and ID. And I have room to spare.
Material. The fabric is sturdy yet lightweight so it wouldnât add unnecessary weight to your hand. The sewing is solid.
Water capacity. Water bladder style with bite mouth piece. To drink water, you bite down on the mouth piece and sip. Without the bite pressure, the bottle stays closed and no water leaks out even when the bottle is on itâs side or upside down. Love that I can take a quick sip and toss the bottle back onto my mat without fussing with closing a lid and potentially disrupting yoga class. The bladder that came included fits about 12 ounces of water. I wouldnât use it on long hot weather runs where I need a lot of water, but itâs perfect and lightweight for winter runs, gym, hot yoga, and general walking around.
Donn –
Seems to be good so far…
Giving this as a gift to a fellow runner and biker and can’t wait to see her use it! This should fit your hydration vest well if this is what you are using it for. Seems like easy drinking top and lots of options in styles!
Tim –
Great handheld running water bottle.
It’s true that the bite valve gives you a sip not a gulp, but for me this is perfect because I don’t want to stop to drink or choke on a gush of water. I use this for longer runs when I want to have my electrolyte drink to hydrate and avoid cramps. I’ll carry it full for several miles before I start taking sips. The handy thumb hole makes it natural to hold without exerting a lot of grip effort. You can cinch down the adjustable strap to make it hug your hand as it empties. Once empty you can tuck it in a pocket or waist band easily. I bought a couple more of these to have them handy wherever I am and to have an extra or two for a marathon.
I’m not sure what other people are expecting form this water bottle. I detected no bad taste. Lots of things come with that “do not eat” packet — if you are dumb enough to eat it you should not be shopping unsupervised. It probably does taste terrible — I couldn’t tell you. I have used the three of these I bought for many miles, in training and races and no leaks, no problems.
Evil Attorney –
Beware These Leak
Unfortunately, these bottles leak. Specifically, they leak between the top of the screw on cap and the top of the opening of the bottle. Ideally, the caps should have an elastic O-ring to help seal with the bottle, but they don’t. This means that if you squeeze the bottle or apply any pressure to the sides, your liquid will leak, no matter how tight you tighten the top. I purchased two of the smallest sizes and they both leaked, meaning this is likely a problem inherent to the design itself and not just a manufacturing issue.
Adam –
Difficult to drink without the extended stem. Get the version that has a stem.
There’s nothing wrong with this collapsible flask. It works as intended and I really like it, it got me through my first marathon, however it is difficult to drink from it during a run without the extended stem. I spilled some water from it just trying to get it out of my running vest, so I had to instead awkwardly bend my neck lower to drink from it as if I was trying to lick my own nipple LOL. I’m returning and getting the one with the stem.
Cameron C. –
Good Quality, Value, and Materials
Very nice bladder style water bottle for running/exercise. High quality bladder and cover materials with extra details like a small âvaluablesâ pocket and reflective detailing. No leaks after several runs up to 8 miles. Would definitely buy again!
Shannon Wright –
Great for short/long runs!
I was looking for something to use in place of a bladder. I love these as I can carry them in my vest, or my legging pocket! Blow air into product after getting a drink, and it eases back into either the vest or pocket!
Anne-Marie –
fit a little bit less than 250 ml but it’s ok. they are easy to use and they fit perfectly in my hydration vest from osprey. love them and recommend them
Chantal –
Excellent format pour les sac dâhydratation et étanche. Parfait pour la course!
Mary –
I didn’t take a chance on any plastic taste so I filled each bottle with 1 part vinegar and 2 parts water and soaked over night and there was no funky taste when I used them. I noticed some reviews about the valve being subpar but I had no issues. They worked fine for me whether I drank straight from my running pack pocket or if I took them out.
Excelente, muy buen producto –
Es práctico, resistente, la calidad del material es buena para su precio.
Peter Deveaux –
I have 2 of these now – I love that they make no sloshing sound as you run! Ordinary plastic bottles have the water slosh around as soon as you take a few sips. Because these have no air in the soft flask, there is no sloshing around.
No leaks as well; the bite nozzle works well and does not leak even if you squeeze the bottle firmly.
The storage compartment is great as well – large enough for a few gels, credit cards etc.