Only tried on, never used. Necklace: 39cm Bracelet: 17cm The necklace can be fastened at any length. Made of stainless steel, it's less likely to cause allergic reactions, and the bracelet has a stylish design, making it easy to wear. It's cute to wear with a knit sweater in winter! In summer, it can be an accent to your outfit, paired with a T-shirt. The toggle clasp is easy to put on and take off once you get used to it, and it didn't come off even when I swung my arm around while wearing it.