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Key Medium Expandable Backpack Everyday Features Easy-access, padded side-zip computer pocket for 15" laptops Spacious main compartment with organization pockets, fleece-lined tablet pocket and key leash Hidden, zip-away side water bottle pocket Key Knack Backpack Travel Features Separate, patent-pending, expandable packing compartment holds 2 to 3 changes of clothes  Meets most popular carry-on requirements as well as fits under most seats Packing compartment with easy-access suitcase lid  Key Medium Pack Technical Features Custom-developed, durable, water-resistant body fabric  Molded, comfort-cool foam back panel YKK™ water-resistant zipper with custom-designed pullers

Save on Series 1: Medium Expandable Knack Pack® with a Knack discount code

Checkmate is a savings app with over one million users that have saved $$$ on brands like Knack.

The Checkmate extension automatically applies Knack discount codes, Knack coupons and more to give you discounts on products like Series 1: Medium Expandable Knack Pack®.