The preset sizes-- XS, S, M, or L are the estimate measurement of natural nails without having to go through the methods of sizing it yourself.

However, I highly recommend that you measure your nails instead of guessing. Check our "How to Measure" page.

With this information, you can:

1. Look at the size chart and check if the preset sizes match your nail measurements so you can select it when checking out.

or

2. (Optional, but very much appreciated) Convert your nail measurements to the nail size, this is called custom size. For example, looking at the Long Ballerina, your measurement is 10mm this would convert to nail size: 6. 

When you place your custom size on the Notes or Instructions field at checkout, the converted measurements should look like: 2, 6, 4, 5, 8. Not 15mm, 11mm, 13mm, 12mm, 9mm.

Remember to arrange the sizes/measurement in order from thumb to pinky.

Here's a quick look at the measurements of our nails: