Sonic the Hedgehog Backpack for Boys - Bundle with 16" Backpack Featuring Amy Rose and Tails Plus Water Bottle, Decal, More | Sonic School Bag for Kids. This Sonic backpack set includes a 16” backpack with adjustable shoulder straps, zip closure compartments, and top loop for hanging featuring colorful artwork of Sonic the Hedgehog, Amy Rose, and Tails. This Sonic backpack for kids contains plenty of room to carry school supplies, your water bottle, and any other small items you need to take to school or on the go. Show off your love of Sonic in style. This Sonic backpack bundle also includes a Beach Kids water bottle and gamer decal, making the perfect gift set for any Sonic or videogame fan. Officially licensed Sonic the Hedgehog backpack set is perfect for all fans, boys and girls, alike. Set also includes a Rex-Man door hanger. Caution: Entanglement Hazard. Keep away from very young children. Do not place around neck. WARNING: CHOKING HAZARD—Small parts. Not for children under 3 yrs.