I bought this pack primarily for biking as I needed more capacity and my old reservoir needed replaced - and I got a great deal on this. While the pack is decent and meets my needs capacity-wise, it is definitely not up to Camelbak quality standards.
1. The pack materials are cheap; the cloth is thinner and not nearly as durable as previous versions. It all feels flimsy and I'm constantly worried about it ripping.
2. The new antidote reservoir is a great idea. My son's Outdoor Research pack already had a removable tube and so I was totally excited to see Camelbak go this route. With that said, this is where the substandard quality really comes out. The material they've switched to for the bags is much thinner and the plastic used at the filler opening and tube nipple is crap. Not the softer, more durable plastic from before, but rather a hard, brittle type.
3. And finally my biggest complaint about the Antidote reservoir - mine has started leaking after only 3 weeks. Because the new tube nipple has moving parts in it to allow the quick-release feature, it is not as sealed and has started to leak from where the pieces all sear inside each other - BAD BAD BAD.
One last thing, I've never had to request warranty service from Camelbak, that is why I've always gone back to them, but if everyone's experience is similar to mine - run away. I've sent numerous emails over the last week (or so) to Camelbak requesting warranty service for the leaking and have not received one response
Hopefully Camelbak listens and goes back to creating the quality products that helped them become the leader - but until then I wouldn't recommend this pack or any product with the Antidote Reservoir in it.