Personalized World's Coolest Geocacher Youth Long Sleeve T-Shirt. The world's coolest geocacher text with a snowman holding a GPS receiver is a humorous geocaching design. Fun gifts for cachers at birthdays, holidays nad geocaching events. youth long sleeve t-shirt. Shoulder-to-shoulder taping. Youth: S(6/8), M(10/12), L(14/16), XL(18/20)