Platypus Platy 2-Liter Ultralight Collapsible Backpacking Water Bottle

Great construction and no leakage. It was the perfect water bladder for a hiking trip to Montana. It fit perfectly in my backpack.

I find some people's reviews of products really puzzling; like taking away a star because the threading on the opening doesn't fit other brand caps (why would you expect it to?) or that you can lose the cap easily because it's small (then don't lose it?) or that it [likely] can't survive a 30' drop like a nalgene could (it weighs 1/6 of what a nalegen does and is collapsible, why would you expect it to?)Here's what you need to know, for carrying a bit over 2L of water its amazingly light, only 1.3 ounces on my scale. It is also very rugged for a collapsible light weight water container.Take it for what it is; a very lightweight and fairly durable way to transport/hold a good amount (2L+) of water.As a side note, this will stand upright when filled with water, which is pretty nice.I personally carry this as a backup water carrier, or for when I make camp and want to filter a lot of water at once before bed so I don't have to in the morning. I only keep clean/purified water in it and when I need water from it I generally pour it into another container to use/drink. Because of the way I use it I'm not overly hung up with how it's difficult to clean because of the small opening, which I'd agree with. However because I again only put clean/purified water in there I just put a couple drops of bleach in and fill it up with water, let it sit over night and then pour it out. I really like this and carry it with me as a standard piece of gear, the pro's far outweigh the con's when used under appropriate expectations in my opinion.

I have so many of these. They don’t leak, or tear. I still have one from like 8 years ago traveling light to the Boundary Waters. I mean, who wants to portage a glass handle of whiskey? No one.These lighten the load. And allow you to bring booze into a game with seamless effort. Well done all around. A little spendy for what it is, but the product is totally worth it.

Whenever I ride my motorcycle I bring water. This water bottle is perfect. You don’t want to go down on a bike with a hard metal water bottle in your backpack. With this product, I can make it super thin when partially filled by squeezing the water throughout the bottle’s entire surface area, and then capping. The vacuum keeps it super slim. Surprisingly, the bladder stands on its own when full. It compresses wafer thin when empty—like a piece of thin cardboard, but very flexible. Extremely light weight.I haven’t experienced any leaks whatsoever, but will report if I do. In any event, I always wrap-up hydration bladders with Wise Owl dry bags for safety. But again, no leaks so far. I am pretty gentle with it and only store it upright in my pack.The only 2 downsides are:1) They are hard to air out2) It’s hard to take a gulp without trickle down your chin. You need to drink carefully so it doesn’t gush outI can live with these small annoyances. Highly recommend this product. All hydration gear I’ve purchased from this company in the past is top notch.

I've bought and intensely used, Platypus collapsible water tanks and bottles for 20 years. I LOVE them. It is really difficult to find them in stores (or even Amazon) these days. I use them when hiking, biking, kayaking. I always carry two of them, one to hold unfiltered water, one to hold filtered water, that has also gone through my steri-pen.In the past 10 years, for some reason the 3-littre tanks seem to have been discontinued, and you can only find 2-littre ones, if you are lucky.However, what bothers me most, is that the material they are making Platypus tanks with now has changed.I'm not aware whether this change has occurred upon FDA recommendation, new legislation (that bans, for instance, BPA) or simply, a desire to lower production costs. But the new plastic is LESS flexible, and therefore, MORE BRITTLE. Yes, it is true O have bought more of these bottles in recent years than I did before, even when I am hiking less :(Before, you could collapse them in practically any direction, and they would hardly ever get damaged. Now, without even getting pierced, the material cracks, and they begin to leak without warning! Not good if you are carrying electronics in your backpack, or you are looking forward to a change of dry clothes after hiking in the rain for hours. Also, you do not want to lose water during a heatwave, far away from places where you can collect more, or buy other usable containers that are no-disposable or too heavy.These bottles continue to be the BEST way for me to transport clean water and water I have collected but not yet cleaned. They are GREAT. The best solution I have found that is lighter in weight than any other (I carry a 3/4-litre Nalgene from where I drink already clean water, aside from the 2 platypus tanks)I only wish the quality were what it used to be when I first discovered them, 20 years ago.

Works perfectly for usage. Does not leave any after taste I’m the water when stored in it all day.