This celestial sun moon y-necklace is made of solid hypoallergenic 316L surgical stainless steel. The sun moon y-necklace has a high-polish finish. The moon slides through the sun, making the design adjustable; it can be worn as a long y-necklace or a choker-style lariat. The celestial sun moon cable chain measures approximately 1.6mm wide by 22 inches long from end to end, with an easy-to-use lobster claw clasp. The cable chain has a 2.5-inch extension to adjust the length between 19.5 inches and 22 inches when worn as a y-necklace.