XS/S Total Bracelet Length: 6.2inch Fits wrist size up to 6.2inch Weight: 9.7g S/MTotal Bracelet Length: 7inchFits wrist size 161mm to 7inchWeight: 10.7g M/LTotal Bracelet Length: 7.8inchFits wrist size 181mm to 7.8inch Weight: 11.7gMetal: 18k Recycled Gold Plated on BrassGemstone: Emerald Green Nano-crystalGemstone Dimensions: 2.5mmChain Type: TennisChain Width: 3.9mmChain Height: 3mm This bracelet is a fixed length and can't be adjusted. If you prefer a looser fit, we recommend sizing up. How To Open & Close the Clasp Secure your bracelet by inserting the tongue into the clasp until there's a 'click' sound, then clip the arms down on both sides of the clasp. In order to take off your bracelet, unclip the arms and pull away from the sides of the clasp. Release the tongue by pressing the button.What are Nano-crystals?Nano-crystals are innovative, lab-created stones that are designed to mimic the look of natural gemstones, without the impact of mining. Product Code: TE-G-B2-GNCZ