Set of 4 Book Covers: Jumbo Or Standard Size (Jumbo) Set of 4 stretchable book covers, Choose Standard or Jumbo size. Standard Fits books up to 8 x 10 inches. Jumbo Fits books up to 10.5in x 11.5in. Standard: Chalkboard Slang, Sunglasses, Floral and Zigzag designs. Jumbo: Animal pattern , Floral, Flowers and Lines designs.