To expand on this: REI used to have a lifetime, no-questions-asked return policy. They changed it (sometime in the past few years, unsure I've only been in the US for a little over one now) to a 1 year no-questions-asked policy. This does not include things on clearance (they call it REI Garage sales online) as this is (as I understand it) mostly the returned items being resold to recoup costs. Clearance items (and electronics too) have a 90 day return policy instead.

I often pay full price at REI instead if cheaper elsewhere because of the generous return policy so I guess it works.