Bracelet & chain size: simply measure the circumference of your wrist and add 1".
(For example: if the circumference = 7", add 1", and select the 8" size)

Bangle bracelet size: measure the circumference of your tightly clenched hand with your four fingers straight and your thumb turned in to touch your pinky. Please measure over your knuckles, fist area.
(For example: if the circumference = 8", and select the 8" size)

Cuff & hinged bracelet size: measure the circumference of your wrist.
(For example: if the circumference = 7", add 1/2", and select the 7.5" size)

Measure with either a flexible tape measure or cut a strip of paper no wider than 1/2" wrap the paper snugly, mark the paper where it meets and measure the marked length of paper.