01Measure
Lay a soft tape flat across the widest point of the nail — edge to edge, following its natural curve — and note the number in millimetres. Measure your thumbnail first: it is the widest of the ten and the one that places your size. If you only have a ruler, press a strip of paper across the nail, mark the edges, and measure the strip.
02Match your millimetres
Every size is matched across ten graduated widths, arranged by finger in the coffret. Between two sizes, choose the smaller — a precise fit is the foundation of a long wear. If your measurement falls outside the S, M and L ranges, contact Client Care before ordering. Please confirm your size before opening the set; exchanges require the item to remain unused and in its original condition.