Personalized Geocache Hike Youth Long Sleeve T-Shirt. Take a hike, geocache, with the K in hike wearing sneakers is a humorous geocaching design. Fun gifts for cachers at birthdays, holidays and geocaching events. youth long sleeve t-shirt. Shoulder-to-shoulder taping. Youth: S(6/8), M(10/12), L(14/16), XL(18/20)