Mirroring the symbol for infinity, this bracelet reflects the perpetual continuity of life. As an old guide once explained about this undulating form: one side reflects our physical existence, one side represents the unseen realm, and their connection point is where we leave and return. Materials include: Pure Copper - the red/pink-ish metal found in many of Sergio Lub's bracelets Jewelers' Brass - the golden metal used is an alloy (mixture of metals) containing approximately 85% pure copper and 15% zinc German Silver - the primary while metal used in the Sergio Lub line. It is an allowy of 65% pure copper mixed with zinc and nickel. Bracelet sizing: Small - For wrists up to 6" in diameter* Common children’s size, & for a petite size wrist…Medium - For wrists 6" to 7" in diameter* For most Women, and some Men of medium build...Large - For wrists 7" to 8" in diameter * Most common Men’s size, & also for a more voluptuous lady.X-Large - For an 8"+ diameter wrist