[PRE-ORDER][Ship On Sept 10th][153x153 MM] Meowcafe Premium CPP Card Sleeve for Seventeen FML Postcard | Kpop Photocard Sleeve (Pack of 25)

- Size: 153x153MM For Seventeen FML Postcard Measuring 150x150MM - Material: CPP ( Cast Unoriented Polypropylene) - Thickness: 0.1MM One-Side, 0.2MM Total - Features: Tear-resistant, strong and Clear CPP and PP are made of the same raw material but with different manufacturing techniques. Both CPP and PP are PVC-Free and Acid-Free CPP is stronger, here is why: the process of manufacturing CPP requires the polymer to have a higher density and strength to withstand being pulled from different directions which makes it more tear-resistant CPP Sleeve is harder, so make it a bit not as smooth to slide in the card, but once the card is in, it provides more protection