เส้นโค้งเรียบ

The curved shape fits the bottom of my foot perfectly, so I can actually reach the callus on the side of my heel without contorting myself. My feet feel noticeably smoother after just two uses, and the dual grit lets me start rough and finish fine.

The dual-sided grit is a lifesaver—I flip it over for a finer finish and my heels feel smooth for days. It definitely beats the cheap files I've used before, and the curve fits my foot arch without any awkward angles.

The curved shape really hugs the sides of my feet in a way flat files never could, and the double-sided grit means I can switch from rough to fine without swapping tools. My calluses are noticeably thinner after just two uses, and my feet feel soft without any soreness from over-scrubbing.