The “Flat Back Jig”, which boasts high operability in swimming such as heavy cover flipping, lift and fall while slipping through the weed, and swimming that utilizes the good lift, has a low center of gravity with an eye position at the tip of the head, flat wide. Due to the shape, it has a high hooking response that surely catches the upper jaw while slipping through the cover.With a brush guard for attacking the back of the heavy cover and a thick shaft hook that can withstand forcible exchanges, it has many achievements as a power jig that can be screwed into the heavy cover without hesitation and pull out the big bass.In addition, the unique streamlined form that creates turbulent water flow by swimming and makes the skirt flutter greatly is indispensable for capturing the dead weed in autumn and efficiently uphill tracing the break line.