Exclusive: Toymakers unveil new 'Frozen' products

New back-to-school products are getting the full "Frozen" treatment.

This backpack from New York-based Fast Forward features a close-up of both princesses in all their glory.

But that's not all! The front of the bag features motion-activated light bulbs. Lights flash for a few seconds every time you touch the bag or plop it down on the floor (guaranteeing teachers will tire of the pack long before kids do).