The Crystal 3D Minnow Deep Diver’s patented and proprietary Internal 3D Prism finish reflects all subsurface light for the utmost visibility, even at maximum depths and speeds. This highly effective trolling bait (recommended speed at 3-8 knots) creates a tight wiggling pattern that perfectly mimics the action of a swimming bait fish, Coupled with the brilliant Internal 3D Prism flash, anglers will attract all types of game fish.