Autoblow A.I.s sleeves are built to last but if your silicone mouth sleeve has reached the end of its life you may wish to replace it. Just pop this new sleeve into your Autoblow A.I. and turn on your favourite blowjob experience! All Autoblow A.I. sleeves are non-porous and completely odourless. Autoblow A.I. is the only sex toy for men utilizing 100% silicone sleeves and youll notice the life-like difference immediately. Enjoy!