This capsule is made from anodized aluminium and features a waterproof O-ring seal, and a swivel key ring and hook to give you plenty of hiding options.
The capsule has an inside diameter of about 1.3125 inches, so can fit most micro and nano coins (including the official FTF geocoin) and a bit of SWAG. The capsule itself measures about 2.75 inches long, 3 inches including the key ring holder.