Check out this cool Rocksax Grateful Dead daypack backpack Spotlighting the Bertha Skeleton! Each bag features art from the band, a more rounded shape than a traditional backpack, foam padded back straps and back section, an internal laptop sleeve and carry handle. Each daypack measures approximately 15.7 x 11 x 4.7 inches and is made of tough 900D polyester with metal zip pull. Officially licensed merchandise manufactured by Rocksax! .