SLAB-PRO WHITE CGC PGX CBCS Graded Case Protector MARVEL SUPERMAN Comic Books GRADED COMIC BOOK PROTECTION: Custom mold designed to protect border of comic book case. AVOID CRACKED COMIC CASES: Eliminates damage from drops or falls. STACKING AND SHIPPING: Unparalleled protection with added rubber support. Stackability = Safer Shipping. DISPLAY YOUR GRADED BOOKS: Designed with added rubber grip to prevent slipping and falling off shelves and display cases. FITS CBCS, PGX AND CGC CASES: CGC cases after April 4, 2016 require our Giant Size Slab-Pros.