The body roll and sonic body sound is a feature unique to the ECOGEAR SHAD. The special body design makes the lure achieve the maximum vibration in the water at the slowest retrieval speed. It swims well on the surface with the no sinker rig for sight fishing and it is easy to make a long cast due to the special ECOGEAR heavy soft plastic material and center of gravity of the lure design. Ecogear POWER SHAD STRONG is made with a special strong and elastic material. 5" size is 7g.