Press-On Nail Sizing
The practice of measuring each natural nail's width in millimeters and matching it to a press-on size chart — the fit variable that most determines whether a set looks natural and stays on.
Trend context
Key fact
Typical nail-bed widths run about 14–18 mm on thumbs down to 8–11 mm on pinkies, and most US press-on brands map those measurements to a 0–9 size scale — with retailers like Handora calling incorrect sizing the number-one reason sets fail.