Ty Jammer Beach Dude DOB 7-9-92 11" Back Pack Zips The product is an 11" back pack made by the Ty brand, featuring a zip closure for convenience. This vintage item is from the Ty Jammer Beach Dude series, specifically designed for children aged 7-9 years old. With its nostalgic appeal and high-quality construction, this back pack would make a great addition to any Ty enthusiast's collection.