Send your little builder off with gear they??ll totally dig, featuring a vibrant print of construction vehicles and glow-in-the-dark details. Our sturdy, roomy Mackenzie backpacks are outfitted with pockets, straps and gear loops to keep everything in place. Made of water-resistant polyester and featuring adjustable padded shoulder straps, exterior straps to hold a Mackenzie Lunch Box and exterior side pockets fitted to our water bottles, it's the most efficient and playfully designed collection around. Personalize it with their name or initials for an extra-special touch.DETAILS THAT MATTERMade of rugged, water-resistant 600-denier polyester.All backpacks have adjustable straps that are contoured and padded to ensure a comfortable fit; padded back panel adds extra cushioning.Small, Large and Rolling backpacks feature an MP3 player pocket cutout for headphone cords.Exterior straps hold a Mackenzie lunch bag (sold separately) securely in place.Exterior side pockets are designed to hold any of our water bottles (sold separately).Backpack glows in the dark.Glow-in-the-dark material needs to ??charge?? under bright light for approximately half an hour to glow properly.Glow lasts for approximately 3 to 4 hours.The Glow effect will become weaker over time because of the constant rubbing.KEY PRODUCT POINTSMini backpack holds a snack, a change of clothes and a favourite toy.Small backpack holds a lunch bag, two small notebooks, two books and a water bottle.Large and Rolling backpacks hold a lunch bag, a large notebook, two small notebooks, several books and a water bottle.Rolling backpack features sturdy Wheelsand straps that can be stored behind a fabric panel when used as a rolling backpack.PERSONALIZATION DETAILSPlease note, personalization placement varies and may not appear as shown. Personalization may cover all or part of the print.