Flextone Camo Hunter Canada Goose Call This is just a plain old goose call, except that flextone technology gives you the most natural sound in a call. Control volume and tone by squeezing and releasing the soft, flexible barrel to sound like a whole gaggle of geese. It also has a short reed tone board that will get super fast and loud. Comes in a natural camo pattern. OK, so maybe its not just a plain-old goose call.