Blue's Clues Harness Backpack for Toddlers - Blue's Clues Backpack for Kids Bundle with 10" Mini Blue's Clues Backpack, Water Bottle, Stickers, More | Blue's Clues Toddler Leash Backpack. This Blue's Clues mini backpack bundle includes a 10" backpack featuring colorful Blue's Clues artwork plus adjustable shoulder straps and a harness to make sure you never lose track of your child. Show off your love of Blue's Clues in style! This backpack is sure to be a hit with Blue's Clues fans and pairs perfectly with all Blue's Clues merchandise. This Blue's Clues mini backpack's harness is sturdy and will stay firmly fastened on your child even in a large crowd. This mini Blue's Clues backpack comes with a Beach Kids water bottle to ensure you stay hydrated! Officially licensed Blue's Clues leash backpack for kids, boys and girls alike, also includes Blue's Clues stickers and a Beach Kids castle door hanger. Minimum manufacturer age recommended ages 3 and up.