Natural Obsidian is a powerful warder of evil and protective energy, Tiger's Eye is a good friend of the human mind and body, bringing good luck and prosperity, Hematite is known for its protective and grounding abilities, eliminating negative emotions and cleansing the body of mental stress, giving us more courage and confidence! FLEXIBLE ADJUSTABLE DESIGN: The Double-Layer Handmade Chakra Bracelets are designed to stretch and adjust to fit both men's and women's average wrist sizes from 6.5" - 8.5", so they can be worn either as a mens bracelet (Pulsera para hombres) or a women's bracelet (Pulsera de mujer) for any occasion.