1 Year - 2 Months - 5 Days.\nIn all fairness to Tacx - this affordable seat bottle rack mount was designed to be ultra-lightweight (and it is) and probably not used by someone who averages 250 miles/week on their bike.\nI won't say that I abused this device... but I wasn't always gentle. And the poor mounting design (you can see the mount arms bending in the photo above where they attach to the seat) is problematic for ANY level rider.\nIf you want the rack and the bottles to stay put - you have to really add the torque to the screws because the entire unit will slide around if you don't.\nThis is irritating to me. I want the bottles to be where I expect them to be when I reach for them. Not somewhere else - requiring me to reach around like a person in the dark, behind my back while I am riding - to figure out where the racks had moved to.\nIn all - if you want to TRY a behind the seat (Time Trial) style bottle mount - at under $20 this is a great way to test it out. I am hooked, but of course I've been a TT rider most of my life.