[105x155MM] Meowcafe Premium CPP Card Sleeve for Kpop Photocards For 100x148MM (4x6 inch)Postcard

- Size: 105 x 155 - Use for: 100x148MM Kpop Postcard (4x6'') - 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 to manufacture 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