Phiten Titanium Chain Necklace Authentic Phietn Products Made in Japan Phiten's highest-end model features Pure Titanium. Materials: Pure Titanium, stainless NOTE: 25.6"(65cm) type has no fastener. Simply by wearing these products, your body can feel relaxed and refreshed. The products are an indispensable item for relieving stress and fatigue in our modern lives.