This is our original design and is still one of the most popular. It is lightweight and comfortable to wear and weigh about as much as a T-shirt. This pieces is constructed with the Japanese 6-1 weave using anodized aluminum and EDPM rubber rings. The rings contain no nickel, lead, zinc or latex making them hypoallergenic. If you order this design in the trimmed in secondary color option please include a note in the "special instructions to seller" section telling me what secondary color you wish me to use.