Boston Red Sox Sling Backpack - Leadoff.  The officially licensed MLB"Leadoff" Sling by The Northwest Company features a front zippered pocket with organizer, elastic mesh beverage holder and side pocket. This 20" H x 12" L x 7" W sling has padded strap and foam mesh padding on back.  The officially licensed MLB "Leadoff" Sling by The Northwest Company features a front zippered pocket with organizer, elastic mesh beverage holder and side pocket.  Also has a padded strap and foam mesh padding on the back for additional comfort.  600D polyester with dobby nylon trim, Spot clean only, Measures 20" H x 12" L x 7" W