The straight stitch foot is flat on the underside to provide even pressure against the feed dogs and it has a rounded needle hole which offers the benefit of more support around the needle to prevent skipped stitches and puckering.

JANOME (Manufacturer) -> Feet (Accessory type) -> For sewing machines; For embroidery machines; For AcuFeed sewing machines (Function) -> Horizontal, 5-7 mm (Hook type)