Nail sizing
Every JDA set comes with ten tips in fixed sizes. Measuring once takes five minutes and means your press-ons sit flush, last longer and never catch on your hair.
JDA Nail Sizing Kit
Ten numbered blank tips (sizes 0–9) plus a printed measuring strip so you can find your exact size on every finger before you order. Includes a €7 credit code to use on your next set.
How to measure
- 1
Measure across the widest part of your natural nail bed, from sidewall to sidewall — not the finger itself.
- 2
Use a soft tape measure, or wrap a strip of paper around the nail, mark it and lay it flat against a ruler.
- 3
Round up to the nearest size in the chart. A tip that is slightly wide can be filed down; one that is too narrow will lift.
- 4
Repeat for all ten fingers — most people need three to five different sizes, and your two hands are rarely identical.
- 5
Write your sizes down (thumb to little finger, left and right) and add them in the notes box at checkout.
Size chart
Widths are measured across the nail bed, sidewall to sidewall.
| SIZE | NAIL WIDTH | TYPICALLY FITS |
|---|---|---|
| 0 | 17.0 mm | Widest thumbs |
| 1 | 15.9 mm | Large thumbs |
| 2 | 14.0 mm | Thumbs / broad index |
| 3 | 13.0 mm | Index & middle |
| 4 | 12.0 mm | Index, middle & ring |
| 5 | 11.0 mm | Ring & middle |
| 6 | 10.0 mm | Ring finger |
| 7 | 9.0 mm | Ring / little |
| 8 | 8.0 mm | Little finger |
| 9 | 7.0 mm | Smallest little fingers |