Hello Kitty Preschool Backpack - Bundle with 11” Hello Kitty Mini Bag, Stickers, More - Hello Kitty School Backpack for Girls Toddler Kids. Not for children under 3 yrs. or 36 months. This Hello Kitty backpack measures 11" x 8" x 3.5" -- the perfect size for preschool kids. This Hello Kitty preschool backpack comes with adjustable shoulder straps. Sure to be a hit with all Hello Kitty fans, this Hello Kitty mini backpack set makes a great gift for anybody who loves Hello Kitty and pairs perfectly with all other Hello Kitty merchandise. This Hello Kitty mini backpack set also includes Hello Kitty stickers, a Beach Kids water bottle, and a Beach Kids cat door hanger. This set is perfect for Hello Kitty school supplies. Officially licensed Hello Kitty merchandise. Sure to delight any Hello Kitty fans - girls and boys alike. WARNING: CHOKING HAZARD—Small parts.