F is for friends who do stuff together with their very own SpongeBob SquarePants Love of Friendship Mini Backpack! This mini-backpack features SpongeBob and Patrick in Bikini Bottom! This is a faux leather backpack with an applique, silicone zipper charm, metallic foil, and printed details. This mini-backpack measures approximately 9-inches wide x 11-inches tall x 5-inches deep.