Coreforce Loop Black 70cm Authentic product, retail price 41,800 yen Price increased from May Comes with a warranty and membership card, so you can rest assured. 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 obtained by putting it in a small zip-lock bag and placing it in their uniform. This Coreforce product works within 3cm of the body. Opened once for photography. Immediate purchase OK! Basically, 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.