Our record-collecting product engineers were always unhappy with commonly-available outer record sleeves. The simple poly sleeves showed wear, dust and scratches easily and the expensive Mylar sleeves tended to split at the seams. We put our heads together and began a line of Ultimate Outer sleeves, made of crystal clear Polypro. which offers many benefits over both Mylar and polyethylene. Choose from 5.0 or 2.5 mil thickness, in standard, self-seal and boxed-set sizes. Your LPs will thank you!