Seems to be well built. The top has been leak free, so far. I love the lager hose diameter and the valve. Much easier to take a big swig when exerting, and you won’t lose your water If you accidentally set your pack down on the bite valve.This continues what I’ve always valued about platypus bladders: low-toxic and taste free polyethylene, rather than the various vinyl formulations used in so many other brands.

In general I am happy with the bladder, no leaks and tasted good from the start so quite happy.Main bad point is the centre baffle has come apart at the bend so it fills like one big balloon. I should have returned it at the time but I thought it was a feature and I could re attach it whenever I wanted to, but now that I want to I've discovered it doesn't re attach. I'm sure I remember something about expanding it for more volume,but can't find anything on it now, and now it takes up to much room in my new bag so it's a bit useless.I like it apart from that tho but can't rate higher as can't use ot.I only use water in it so cleaning easy

I have used platypus reservoirs for years, as they seem to perform far better than other brands with daily use in tough conditions. This new design, however has a major flaw as the water tube easily detaches from the reservoir when you slide it into your pack, or as you are going about your day. The connection point is low and the tube is pushed up by resistance against your pack as you drop it into place. That means that sometimes it works as intended, but other times you pick up your pack, far from home, and your THREE LITERS of water are all dumped into the bottom of your bag. No one packs around 3L of water if they don't need it, which makes this flaw downright dangerous. I would love to buy another Platypus reservoir, but don't want to deal with this ... MoreI have used platypus reservoirs for years, as they seem to perform far better than other brands with daily use in tough conditions. This new design, however has a major flaw as the water tube easily detaches from the reservoir when you slide it into your pack, or as you are going about your day. The connection point is low and the tube is pushed up by resistance against your pack as you drop it into place. That means that sometimes it works as intended, but other times you pick up your pack, far from home, and your THREE LITERS of water are all dumped into the bottom of your bag. No one packs around 3L of water if they don't need it, which makes this flaw downright dangerous. I would love to buy another Platypus reservoir, but don't want to deal with this preventable problem any longer. Help, Platypus! A redesign is needed.