Sizing Guide
Press-on nails only look (and last) their best when they fit edge to edge. This two-minute guide helps you pick the right size, length, and shape.
Using a coin to size your nail beds
Lay a coin flat next to your nails as a size reference, take a clear photo of your four fingers and then your thumb beside it, and share it with us, we'll match your exact nail-bed sizes from the picture.
Finding your size
Every NailZen set includes multiple sizes per finger so you can match each nail individually, most people are not a single uniform size across all ten.
- Lay each press-on over your natural nail before applying. The correct size covers your nail edge to edge, sidewall to sidewall, without overlapping the skin.
- Between two sizes? Go smaller. A slightly snug nail bonds fully and lasts; an oversized one rests on skin and lifts early.
- Note your sizes. Once you find your match per finger, they stay consistent, jot them down for next time.
Size chart (width across the nail)
| Size | Approx. width | Typically fits |
|---|---|---|
| XS | ~13–15 mm | Petite nail beds, pinkies |
| S | ~11–16 mm | Slim to average |
| M | ~12–17 mm | Most common, thumbs & index |
| L | ~14–18 mm | Wider nail beds, thumbs |
Tip: measure the widest part of each natural nail in millimetres and match to the closest size.
Length & shape
Lengths: Short (everyday, low-maintenance), Medium (elegant, versatile), Long (statement). You can always file a longer set down, never up, so when unsure, size up in length.
Shapes: Almond and Oval flatter most hands and elongate fingers; Square and Squoval read clean and modern; Coffin and Stiletto are bold, dramatic choices.
Still unsure?
Use our Shade Finder to match colour to your skin tone, read the full application guide, or contact us, we're happy to help you choose.