Initially the bladder was okay; however, on the 4th use, the hard plastic where the hose enters the bladder cracked, causing it to leak. I looked on Nalgene website and found no information re: guarantees or how to send back. Anyway, found an address to send it to and did so. After a couple of weeks, I called Nalgene Customer Service. The Rep asked for my return authorization number...the webs
This review was written in the old system and had content requirements that are different than reviews written today.