When the Pocket Shot is in use, it measures 5 inches long but the Pocket Shot measures only 2.3 inches by 1.3 inches when it is closed. They recommend to use 1/4 inch up to 5/16 inch steel slugs, marbles, small paintballs around .4 cal, and airsoft for the Pocketshot. DO NOT us BBs as they will tear the pouch and maybe dangerous.
The Pocket Shot is the evolution of the slingshot. The patented circular design allows users to load and shoot different projectiles at two to three times the rate of a regular slingshot. Perfect for hunters and recreational use as its tiny size allows you to keep it in your pocket, tackle box, or backpack while storing ammo in its watertight compartment. Firing at up to 350 feet per second, the Pocket Shot is not a toy. Created and built in the USA.
There are a ton of fun videos that pit the Pocket shot against random objects that you can watch here.