Coreforce Loop Black 70cm Authentic product, retail price 41,800 yen Price increased from May Comes with a warranty and membership card for peace of mind. Many active professional golfers and baseball players use this product. For high school and college athletes who cannot wear it around their neck or arms during practice or games, the effect can be achieved by placing it in a small Ziploc bag and putting it in their uniform. This Coreforce product is effective within 3cm of the body. Opened once for photography. Immediate purchase OK! Generally, we cannot reserve items. The first person to purchase will be given priority. If you need expedited shipping, please consult with us. (We may not be able to accommodate your request.) Thank you.