Minnie Mouse Mini Backpack Set - Minnie Mouse Preschool Backpack Bundle with Stickers | Minnie Mouse Backpack for Toddler Girls. This Minnie Mouse backpack measures 10" x 8" x 3.5" -- the perfect size for preschool kids. This Minnie Mouse preschool backpack comes with adjustable shoulder straps. Sure to be a hit with Minnie Mouse fans of all ages, this Minnie Mouse backpack set makes a great gift for anybody who loves Minnie Mouse and pairs perfectly with all other Minnie Mouse merchandise.This Minnie Mouse mini backpack set also includes a pack of Mickey album stickers. This set is perfect for Minnie Mouse school supplies. Officially licensed Minnie Mouse mini backpack set. Pair this with other Disney merchandise.