Nylon adjustable strap necklace. Likely a product using "Olgahexa," a plant-based carbon fiber developed by Pola. This fiber is made of 100% carbon and is a necklace type designed to support the body's circulation through far-infrared effects. - Brand: DREAMEXA - Model Name: CARBON - Material: Nylon Length: 54CM Used condition. Please understand that this is a used item. Will be shipped compactly via Rakuraku Mercari or Yu-Yu Pack. Thank you for viewing.