100pcs Nail Buffing Files Printed Flower 80/100/150/180/240/320 Half Moon Sandpaper Polished Nail Art File DIY Nail Salon Tool
Material:Sand paper on surface,Sponge(EVA) on second layer, Plastic(PP) in middle-level.
The curve is much better for filing around the cuticle area as that curve sweeps around and is less likely to damage the surrounding skin. The file feels good too in your hand, and I think they last longer than the straight sided files I've been using. Great product!