IRIS Bracelet Product Specifications Material: 18k Gold and High-Performance Titanium Shape Memory Alloy Gold Finishes: Available in YELLOW Gold, WHITE Gold, ROSE Gold, or BLACK Gold Stone Options: Black Diamond | Precious Stones: Ruby, Sapphire or Tsavorite Diamond: 0.02ct Available Sizes: S | M | L Collection: NARA Shape Memory Technology Our signature shape memory alloy allows the jewelry to gently flex and adapt. While the initial size may vary slightly depending on how it is formed, the technology enables the piece to gradually mold to your personal size and shape over time, giving you a perfect, comfortable fit. Size Internal Oval Dimensions Circumference S 5.4 x 4.6 cm ~15.7 cm M 5.8 x 4.6 cm ~16.7 cm L 5.2 x 6.2 cm ~17.7 cm *Shape-memory technology allows slight adaptation to nearby sizes for a flexible fit.