JS Long Arm Quilt Repair Mattress Machine features 30" capacity from needle to neck with high presser foot lift (25mm clearance), specifically designed for mattress fabric repairs. The curved hook-shaped presser foot accommodates extra-thick, highly elastic seams without dragging material, reducing top layer damage. With omni-directional sewing capability at 1500 stitches per minute, it handles complex pattern following and materials up to 60mm thick. The integrated computer control system with infinitely adjustable speed and automatic needle positioning makes operation practical and convenient. The needle bar lifting device and integral upper/lower shaft construction ensure beautiful repairs even on thick fabrics.