P&F Full Coverage Blu-ray Steelbook Jewel Plastic Sleeves Cases - Bluray Protective Slipcovers (Pack of 6) Extra Plastic Protective Outer Sleeves Case for Blu-ray Case / 4k blu ray steelbook - Measuring 174mm x 141mm x 20mm - Fit any normal steelbook bluray Small curve at the bottom help you pull a blu ray protective sleeves out easily High Quality 300 Micron(thick 12 mil) - very strong and take a lot to pull apart - APET Material - APET is one of the BEST clear plastic materials - an enviromentally friendly and safer for storing than PVC The Ultimate in Steelbooks blu ray plastic sleeves protection! - They protect the Blu-ray Steelbook movies 100%, and they even make the Blu-ray Steelbooks look "newer" by being in them. Designed to be slightly bigger so it will fit steelbooks with the J card still on the steel (the cardboard/paper sleeves that come on most new movies). They not only protect your Bluray discs, 4k blu ray steelbook, PS4 Steelbooks, PS3 Steelbooks, Xbox One Steelbooks, Future Paks, Metal Paks, Iron Paks orViva metal cases from scratching, touching, dust and dirt. But they also look a lot nicer into display stands