Personalized Geocacher Lost Mind Patterns Long Sleeve T-Shirt. I've lost my mind, but, that's OK. I've marked it with a waypoint. Uh-oh, low battery! with geocacher in patterned text against a patterned background is a funny gift design for those who have lost their mind over the outdoor activity of geocaching Pre-shrunk 100% cotton 6.1 ounce long sleeve t-shirt. Double-needle stitched neckline and sleeves. Quarter turned. Shoulder-to-shoulder taping. Adult: S, M, L, XL, 2XL, 3XL