Personalized Green Lost Mind T-Shirt. I've lost my mind, but, that's OK. I've marked it with a waypoint. Uh-oh, low battery! A humorous gift design, for the loved one who has lost their mind over geocaching. Everyone loves our Custom T-Shirts! Wardrobe essential for looking good, 24/7. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar. Shoulder-to-shoulder taping. Double-needle stitched sleeves, bottom hem and front neck. Note: greys are a cotton/polyester blend.