AERI Nail Size Guide

Find your perfect fit with our easy sizing guide. Measure the widest part of each nail bed in millimeters and match it to the sizes below.

Size Thumb (mm) Index (mm) Middle (mm) Ring (mm) Pinky (mm)

Slim (For petite/ narrow nail bed)

15.0 11.0 12.0 11.0 8.0

Regular (Fits 75% of customers)

16.0 11.0 12.0 12.0 9.5

Tip: If you don't have a measuring tape, place a small strip of paper across your nail, mark both edges, then measure the distance with a ruler. If you find yourself between sizes, we recommend sizing up for better coverage.

Nail size measurement instructions