It's about 6 inches long, weighing just over an ounce. A little small for a trout imitation, but the noise and water displacement makes it fish like a bigger bait. Here's a size comparison against the 7 inch Osprey. The Mikey is not in the same family as a Slammer, Monster Jack, etc. It's an entirely different animal. Jackall Bros. had a smaller one available earlier, but this is the first time the "bigger" one has been available in the States.

http://www.calfishing.com/dc/user_files/1859.jpg