The following is a reprint from the official shop's product description. ■ This product is only sold at the Danact official shop. ■ 【Used by Tour Seed's professional, Atumu Shigenaga】 This swing training device is used by professional Atumu Shigenaga, who has experience winning the Token Homemate Cup, to practice at home. ■ 【Achieves exquisite flex】 After two years of calculating the range of flex needed to create the optimal lag, we have achieved an exquisite flex that tour professionals rave about. ■ 【Maximize head speed】 Because you can swing while feeling the exquisite flex, you can naturally create lag, enabling you to achieve your highest head speed and distance ever. ■ 【Understanding the correct impact point】 The design only makes a sound at the precise acceleration point, allowing you to learn the optimal point to apply force. ■ 【Sound that doesn't matter even when used at night】 By minimizing the "click" sound, you can practice your swing without worrying about your family or the next room. ■ 【Length that can be used indoors】 It is long enough to swing even in a 6-tatami mat (approx. 9.7 square meters) room. Total length: 81cm. ■ 【Grip correction available or not available】 We recommend grip correction for golfers aiming for under 100, and no grip correction for golfers aiming for the 80s or 70s. ■ 【Uses authentic material grip】 The grip uses the same material as actual clubs. ■ 【Made in Japan for peace of mind】 Each one is carefully manufactured in Japan, so you can use it with confidence. ■ 【Product Details】 Body size: 810mm x 35mm