Size: 7" average Materials: Flex Metal Gemstones: 8 mm Tiger Eye: is a very protective stone. It has a powerful, dynamic energy with a watchful quality to it. After all, there is a reason this stone is called tigers eye! Also, strengthening and grounding energy. What is a Flex Bracelet: It is Stainless Steel Flex wire - kinda like the toy called Slinky was made from. It adjusts to all wrist sizes and you can bend it without breaking it. There is a hook on the back of the bracelet to secure it closed - see one of the pics.