Men's 3.75mm Textured Halo Band, 18k Gold-plated Steel

A ring that fits slides over the knuckle with a little push and does not spin or slip off.

1. With a ring you already wear. Lay it flat and measure straight across the inside, edge to edge, in millimetres. Match it to the inside diameter below.
2. With a strip of paper. Wrap a thin strip around the base of the finger, mark where it overlaps, then lay it flat and measure to the mark in millimetres. Match it to the distance around the finger below.

Measure at the end of the day, when fingers are at their largest. Between two sizes, take the larger one.

US size	Inside diameter	Around the finger
6	16.5 mm	51.9 mm
7	17.3 mm	54.4 mm
8	18.1 mm	57.0 mm
9	18.9 mm	59.5 mm
10	19.8 mm	62.1 mm
11	20.6 mm	64.6 mm
12	21.4 mm	67.2 mm