Chain Size Guide
First, decide how you prefer to wear your necklace, tightly, loosely, or as an exact fit.
Exact fit (50cm/19.6" - 55cm/21.6") is the best and most popular option for most men. It allows the necklace to fit tightly and naturally around the neck. A precisely fitting necklace falls neatly on the collarbone and provides a small space for it to move. These necklaces can be worn inside or outside the shirt.
Loose fit (60cm/23.6" or longer) is a popular style among men who prefer their necklaces to sit low without restriction. Loose-fitting necklaces are usually worn on the outside of the shirt and often include a pendant or chunky look.