Bags for vinyl records in acid-free paper, without ligninha, of 135grs, light gray or white.
 Paper with 3% calcium carbonate in order to absorb migrating acids.
 Very soft surface that minimizes the risk of abrasion of the discs.
 The pockets have a circular opening to view the disc.
 The envelopes have a flap to close and protect from dust and have no circular opening.
 Packs of 25 units for 33 rpm or 45 rpm discs.