The 13 Fishing Bubble Butt is a soft plastic straight tail worm with an air pocket bubble in its tail. It has a typical straight tail worm tapered body design, but the combination of the heavily salted plastic and the air bubble in the tail allows the bait to stand up on the bottom, similar to a Ned rig, making it ideal for shakey head presentations where you don't want the tail to drag along the bottom. This air pocket can also be used for adding scents or rattles to the worm.
Beyond shakey heads, there are many other great ways to rig the Bubble Butt. For example, the bait has cut-out rings in the center for easy wacky rigging and an easy-to-remove notched head for when you want the worm to sit flush against a pinned bullet weight Texas rig. The Bubble Butt is also infused with 13 Fishing's Donkey Sauce attractant to encourage fish to hold on longer after they bite.