Authentic product. 45cm Popular red and black models. Offered at a significantly lower price than major e-commerce sites. Other colors are also available. AXF Silicone Necklace axisfirm Axisfirm Silicone Necklace AXF-300 Core Stability Blood Circulation Athlete Ifmic Mineral Crystal Recovery Silicone charm "Color Band". Stabilizes balance and makes movement easier. 【Features】 AXF axisfirm (Axisfirm) is a high-performance gear that improves core stability and body balance, which are necessary for all activities. The fibers of Axisfirm products contain "IFMC. (Ifmic)", a patented technology of aggregated functional mineral crystal. By wearing it, you can expect improved balance, improved recovery, and improved performance. Thank you for viewing.