One size fits most.
Our kits come with 24-28 nails per box. This is to ensure a custom fit, plus extras in case of a mishap!
Press-on nails come in numbered sizes, kind of like shoes. Our measurements are pictured in the chart below. This measures flat across, even though the surface of the nail is curved. The nails themselves bend and flex to fit your natural nail shape. (For example, the size 0 will flex to fit slightly wider than 14mm).
If you have small nail beds, you're in the clear. Using a regular nail file, the edges of the Nailz can be filed down to fit your nail size. This method can also be used to have the base of the Nailz match your nail beds- just file until it's a perfect match.