Hemline Bulky Seam Aid

The Hemline Bulky Seam Aid (also known as a hump jumper or clearance plate) is a small plastic tool designed to keep your sewing machine's presser foot level when transitioning over thick fabric layers, such as denim jeans seams, canvas, or wool coats. By preventing the presser foot from tilting at a steep angle, it eliminates skipped stitches, uneven thread tension, and broken needles.