The Savage Gear Pro Series 4D Line Thru Trout Swimbaits are an improvement upon the original 3D Line Thru Trout. They feature a new internal harness that allows thicker line to be passed through the bait and come with a line thru modifier included. The Pro Series features three photorealistic color patterns that could easily be mistaken for a real live trout. Finally, the addition of scent impregnation makes them one of the most feature packed soft swimbaits available.