The favorite for layering, with easily removable liners, is now available in black and variety packs. White regular size is 126 squares, 1⁄2in x 1⁄2in x 1⁄16in. White and black variety packs contain 63 regular size squares and 154 small squares, 1⁄4in x 1⁄4in x 1⁄16in. All acid-free and archival safe.