Fighting Sports Necklace Sweat and water resistant Silicone material. Ideal for sports, made of sweat and water-resistant, skin-friendly silicone. ☆ [Shoulder stiffness] [Neck stiffness] [Uses Phiten's advanced technology, Metax] ⭐︎Lightweight⭐︎ ⭐︎43cm⭐︎ There are no noticeable scratches or stains, but please understand that this is a used item. Thank you.