Sized for a savvy purse, healthy well maintained nails and manicure routine on the go. Sanitizable and reusable design to help you save more. Suitable for fingernails, toenails, natural nails, acrylic nails and other false nails alike. Flexible high density sponge core naturally conforms to the shape of the nail without causing abrasion or damaging cuticle or skin. Built-to-last 4-way 150 grit salon grade sanding surfaces with consistent edges render superior nail buffs each time.