The X Zone Muscle Back Craw has a distinctive cross ribbed body design with appendages to provide micro movements. The soft, realistic, textured claws are ribbed on both sides and the outer edges having specially cupped pinchers that taper down to join the body. The specialized plastic, super fine salt and scent infused formula used to make the Muscle Back Craw allows the claws to float at rest for a time mimicking the defensive stance of a real crayfish. All of these exceptional features produce a craw that swims, hops and undulates in the water creating a NEW unique sonic signature and vibration that BASS LOVE!!!