Personalized Eggstreme Geocaching Youth T-Shirt. Eggstreme geocacher text with an egghead wearing a hard hat and spiked hiking boots and holding a GPS, rope and walking stick, is a humorous design for geocachers at birthdays and holidays. Let the good times roll in a durable T-Shirt that takes kids from school to play in an amazing array of colors. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar.