These are brand new 10" premium 2 mil thick plastic resealable outer sleeves! They measure 10.75" x 10.375" + 1.5" flap (273mm x 264mm + 38mm flap). These archival quality crystal clear sleeves are a great choice for protecting your precious record collection. The special adhesive used on this sleeve allows you to open & reseal the record many times, keeping your vinyl safe and dust-free. Biaxially Oriented Polypropylene (BOPP) means a much better sleeve clarity than the traditional cast polypropylene or polyethylene. The resealable adhesive strip is located on the body of the bag, allowing for easy record insertion & removal. - Archival quality BOPP; - Resealable; - Fits single, double, & gatefold 10" records; - Crystal clear clarity; - Premium 2 mil thick.