Osprey Hydraulics Soft Flask

I use these for long runs and absolutely love them. They’re lightweight, easy to carry, and much more comfortable than hard bottles as they shrink down while you drink. The size is great, they fit well in my running vest, and they’re easy to use on the move. Really practical and reliable for training — I bought one first and then ordered another one. I would definitely recommend.

I generally use an Osprey bladder for my water and added this to my kit for two reasons - a vital backup in case of a bladder puncture which could be a real problem in remote locations; and to take electrolytes. The 500ml size is perfect for one of my electrolyte tablets and means I can keep the bladder for water and use the bottle for that. It is really strong, has never leaked and does what I need perfectly. I have been using it for around a year now.

his is not my first time buying this brand, and I keep coming back to it for a reason. I’ve tried other, even more popular, brands – but many of them had a strong chemical smell or poorly designed caps that would leak. Osprey flasks have always been reliable for me: no smell, no leaks, easy to use on the go. I’ve been using them for years and only replace them when I lose one or when they get too yellow from long use. Also, the price is the best I’ve seen for this level of quality. Highly recommend!

Just what I needed. With this being slightly wider than most means it's not too tall which is exactly what I was looking for. It means it's not hanging out my vest too much. Great product

Easy to use and did what I needed it to do.

Light and easy to use. I like to drink fast, however arthritis means most bottles are too hard to squeeze and sucking is difficult when puffing.Perhaps a 750ml bottle with a softer compound center is what I need. Hint hint bottle manufacturers.

Leaked from day one. I know that this is meant for the strap pockets on a running vest, but I thought (at £15) it would be leak-free to go in my back pocket like I used to carry my Platypus Softbottle 0.5l in for years until it gave up the ghost. Waste of money. I can't even tell for sure where it is leaking from but presume it must either be the thread on the screwcap or the bite-valve and the action of walking is flexing either location too much. You would think a quality brand like Osprey would test these things in a variety of different carry-locations. No way I would have this in a backpack or jacket pocket where it could get other things wet. To be certain, I've tested out in various trecking trouser pockets and it leaks in all of them – at least it's only my leg or backside that's getting wet. Don't waste your money unless you're carrying it in a strap pocket.Also, not a pleasant taste. How do Nalgene and Platypus manage a taste-free bottle/flask and others seem content with a chemical after-taste?

The bottle bit was missing… super annoying!!!

good quality, doesn’t leave weird taste to the water, but I it misses a lid to the tip where you put your mouth

Buen producto llego a tiempo, bien empaquetado, los productos ospray para mi son muy buenos, buenos materiales

I purchased two of these soft flasks to go in my Osprey Duro running vest. I like these flasks because I can easily access them while running. I alo like these flasks because they are easy to take out and refill at a water station without having to take off my vest. These flasks are also easy to clean versus the bigger bladders. I got these for a great deal. They never leak either.

My second one.. Very useful

Very good