Shrink to Fit Book Covers, One Size Fits All, Heat Shrink By It's Academic (2 Covers)) Comes two in a package! Add heat and it shrinks to fit Insert photos, cutouts, scrapbooking material or other items to customize your own book cover Easy to remove, won't damage book or spine Water resistant. Protective- durable, no frayed edges, tear resistant No measuring, cutting, folding or taping. Maximum book size: 9 x 12.5 inches