Ultraspire x UltraFlask 550 Hybrid Running Water Bottle – Ultra Squeezable, Soft and Comfortable, BPA and PVC Free, Made in The USA
$ 17.95
Price: $17.95
(as of Mar 25, 2025 08:56:05 UTC – Details)
UltrAspire introduces yet another milestone in hydration history! The Ultraflask 550 Hybrid Bottle has all the benefits of a softflask but with the conveniences of a hard bottle. The bottle is designed to sit as close to the body as possible to minimize movement when full. The soft-body shape helps with rapid access, comfort, and squeeze. The large cap opening easily fits ice cubes and is covered by a high flow push/pull valve. Made in the USA.
synthetic
Made in the USA or Imported
Features – 550 mL Fluid Capacity; Simple push/pull nozzle with high flow; Soft and comfortable against the body; Ultra squeezable with quick recharge.
Hydration Vest Compatible – Easily accessed and returned to a vest pocket, even when empty, and great for waist packs, too!
Easy to Clean – Hand-wash. Due to the nature of this ultra-squeezable bottle, it is not recommended for dishwasher use.
100% BPA & PVC Free – Taste and odor-free; No harmful chemicals; Phthalate-free
Made In The USA – Food-grade LDPE.
Customers say
Customers find the bottle fits well in pockets and vests. It is soft enough to be comfortable without rubbing or bruising. They are satisfied with the bottle’s quality, water retention, and material. However, opinions differ on leakage.
AI-generated from the text of customer reviews
10 reviews for Ultraspire x UltraFlask 550 Hybrid Running Water Bottle – Ultra Squeezable, Soft and Comfortable, BPA and PVC Free, Made in The USA
Add a review
Related Products
$ 17.95
Andrew Aceves –
I love this product even though I don’t use the vest
I love this product even though I don’t use the vest.First of all, it fits neatly in the side cargo pocket of my hiking shorts. It’s so much more comfortable than a cylindrical bottle which either doesn’t stay in a shallow pocket, or thumps annoyingly against my hip when clipped to a belt loop. The flask bottle works like a charm.The other amazing use is as my in-flight water bottle when traveling. This bottle slips neatly into the seat-back pocket in front of me and holds enough water for a long flight, but doesn’t cause the seat pocket to stick out so far that it bangs me in the knees. It’s also short enough that it doesn’t prevent the tray table from lowering. This is totally my go-to travel bottle for flying.Great product. Lightweight and well made. The valve doesn’t leak even if you sit on a full bottle.Maybe someday I’ll take up running, but for now this bottle is the only one I’ll use for flying or hiking
TrlSccrFitnsMtb3 –
Excellent bottles!!!
I use 2 of these in my Zygos vest (awesome) for trail running. These are top notch. Very comfortable shape with great squeezability. Very positive closure on mouth pieces that are just the right hardness of rubber. I like the clear ones so I can see exactly whatâs in there (and whatâs going on in there). I use one for extra water and one for sports drink. Highly recommend!
nick –
Lightweight, functional, but can become leaky over time
I own two of these flasks and use them all the time. they work well for me for running, travel, and camping as they are seriously lightweight and the perfect shape, and fit perfectly in other Ultraspire products. However, I do have to say they are not always the most secure bottles as there are some issues with the rubber nozzle. If not pressed down all the way the nozzle can let water through, also over time the rubber mouthpiece can become slightly misshapen allowing water to very slowly drip out if not kept verticle. If you can deal with some minor leaking from time to time the tradeoff is worth it.
LW –
Reusable, squeezable, fits in a pocket!
When this bottle arrived, it smelled like Costco, which is odd. (What is that smell? Pallets? Boxes? Plastic?) The smell went away in a couple of days, fortunately. This is absolutely my favorite reusable bottle: the flask shape means it doesn’t fall out of my jacket or side pocket of backpack, I don’t have to worry about accidentally dropping and breaking it, I can squeeze it so that when I’m running or hiking the water ends up in my mouth and not all over my face, and it doesn’t impart a plastic taste or smell to the water. Also, I like the fact that it comes in lime green.
Moximum –
All good. Great product!
Doesn’t leak or drip — sorta important, don’t you think? And yet many water flasks I’ve bought do, and much more expensive ones! So that’s good. As well, the bottle is soft enough that it conforms nicely in a chest-pocket style vest, which means less rubbing or bruising, AND easy to squeeze to get water out at higher volume that other flasks I’ve used.
Terri –
The pull top opens in my bag.
Good size container but the pull tops open when I put my hydration vest in my travel bag (to races, friends cars) if I am not a careful I lose all my water or everything gets soaked. I almost returned the bottles.
Erik T. –
They hold water
These water bottles work perfectly with the running vest my wife got for Christmas. I was green with envy upon seeing them. They surprisingly hold a decent amount of H2O, and are ok to clean.
Cassie –
it’s perfect for hikes or really long runs where you don’t …
extremely light. never thought a bottle could be this light lol i don’t use it for shorter races (half marathons). It’s too hard to get out of the pack and secure quickly when you’re racing for time. If you don’t get it in tightly, i it can make the pack bounce and chafe your collar bone.I did read a review from an ultra runner who said this was the only bottle that didn’t bruise her ribs. When you’re running 30+ miles, that’s definitely something to think about.it’s perfect for hikes or really long runs where you don’t mind stopping for a minute or so and don’t want to carry a large bottle. very good quality, glad i bought it.
marco –
Ottima borraccia, compatibile con gli zaini Ultraspire. Nonostante non sia un modello “softflask” , risulta comunque molto morbida e la particolare forma si adatta perfettamente oltre che alla tasca dell zaino anche alla fisionomia di chi lo indossa.Per correttezza devo dire che sto sperimentando delle softflask di una catena di negozi sportivi che si adattano perfettamente anche loro alle tasche degli zaini Ultraspire.
marco –
Ottima borraccia, compatibile con gli zaini Ultraspire. Nonostante non sia un modello “softflask” , risulta comunque molto morbida e la particolare forma si adatta perfettamente oltre che alla tasca dell zaino anche alla fisionomia di chi lo indossa.Per correttezza devo dire che sto sperimentando delle softflask di una catena di negozi sportivi che si adattano perfettamente anche loro alle tasche degli zaini Ultraspire.