This is a backrest that can be attached to Pearl's new drum thrones (such as the D-3500 and D-1500). I purchased it 2-3 years ago and used it only indoors. I have never taken it outside, and I think it's in very good condition as a used item. All accessories are included except for the original box, but there is some slight wear and tear, so please refrain from purchasing if you are very particular about condition. Thank you very much.