Boys Sponge Bob Squarepants Backpack. Be prepared for oceanic escapades in Bikini Bottom with this awesome bag! Reminiscent of everyone's favourite sponge, this bright yellow rucksack mimicks Spongebob's iconic style complete with leather-effect body, embroidered face, and plush arms and legs. Detailed with a Gary the snail rubberised zip-pull, this Sponge Bob Square Pants backpack is sure to be with your little anemone from bubble blowing, to karate, to jellyfishing!