New Slide Swimmer has an injection molded ABS hard plastic body which is covered by soft plastic material. Fish feel more realistic when the bait is in their mouth. Also, utilized is a vibrating spring in the head of he bait so when fish bites they feel a vibrating quivering sensation which causes them to old on longer. Unlike other jointed swim baits, it swims without cracking sound. A great bait for spooky fish.