Rainbow Mermaid Glow-in-the-Dark Mackenzie BackpackEDITOR'S NOTE Durable, functional and oh so playful, the Pottery Barn Kids Rainbow Mermaid Glow in the Dark Mackenzie Backpack are packed with pockets, straps and gear loops to keep everything in place. Made of water resistant polyester crafted from recycled plastic bottles and featuring adjustable padded shoulder straps, exterior straps to hold a Mackenzie lunch bag and exterior side pockets fitted to our water bottles, it's the most efficient and