The "Slim Top Shape" keeps the leader in place and prevents it from slipping off. The "Wide Bottom Shape" allows the lure to move freely and naturally. The "Wide-Angle Out Hook Shape" makes it easy to open and close, and allows for smooth lure changes. The "Center Balance Shape" is symmetrical and does not interfere with the stable movement of the lure. *Suitable for a wide range of fishing styles from freshwater to saltwater.