Spellbinders M-Bossabilities Folders - Two Designs. Twice the Value. Double your creativity with the new Spellbinders M-Bossabilities folders. Unique reversible embossing folders give you twice the value and more design options for detailed embossing and letterpress creations. embossing folders flip around to create two different looks! Spellbinders M-Bossabilities folders come in 2 sizes for all your paper crafting needs. This folder is A4 which is 5" x 7". Each folder has two designs - one on each side - for more versatility and value.