Zumer Sport™ now has backpacks! Zumer Sport backpacks are fully functional school backpacks, but made from our patented and copyrighted sports ball materials! At school, at the gym, at a game – ANYWHERE you go, carry a backpack that tells everyone what your passion is! Zumer Sport Backpacks have all of the features of conventional (plain) backpacks. You just will not find a better looking or better made backpack – ANYWHERE! Backpacks measure 18" tall, 14" wide and 4" thick.