Supposed to be 1 year, but their service is pretty difficult to get through to anyone. They want you to take them back to where they were purchased. This set was a Christmas gift and my first set was over a year old, so that was not an option. You also cannot buy parts for them to fix them yourself.
I use them a lot, occasionally mounted camera on them, etc. For the casual shooter/user they are probably fine. For me they are not.
I did just get a set of MSA Sordin Pro muffs with Gel pads. They are unbelievable. The sound attenuation is very different. No clipping, so you continue to hear everything but the loud noise. The loud noise sounds a little bit like an echo, but I think it is when then loud noise drops back below the 82 dB level. I'm also looking forward to seeing how they work with a scanner at the indy car races. The HLs did not because of the clipping.