Production is now in full swing. We're offering a slight price reduction. Introducing the world's first unique stretch board, for which we are considering applying for a utility model. The product name is "Achilles-ken Daikun" (Achilles Tendon Strongman). To maintain a beautiful walking posture, it's necessary to straighten your back. Also, as we age, our legs and lower back weaken, so it's important to strengthen the Achilles tendon to prevent falls. Use the Achilles-ken Daikun to work on your beauty and health. Also, since it's made of unfinished wood, you can customize it to your liking by applying stickers or drawing on it with a marker. ❤Features❤ ◈Beautiful wood grain···See Photo 1 The footrest is made of Japanese cypress. The wood grain is beautiful and soothing. You can also enjoy the scent of the wood. ◈Warm···See Photo 1 Because it's made of wood, you can feel the warmth even when you stand on it barefoot. ◈Mode switching···See Photo 2 By rearranging the slider, you can use it at your preferred angle. ・Mode A: 16°～23° (Weak to Medium) ・Mode B: 21°～31° (Medium to Strong) ◈Stepless angle adjustment···See Photos 3-8 By moving the slider, the angle can be adjusted steplessly from the minimum to the maximum angle. ◈Excellent stability···See Photo 9 With a three-point support, it's extremely stable even when you stand on it. ◈For everyone···See Photos 3-8 With strengths ranging from Strong (31°) to Medium to Weak (16°), it can be used by anyone, regardless of age or gender. ❤Specifications❤···See Photo 1 ◈Dimensions: Width 250mm x Length 300mm ◈Weight: 930g ◈Surface Finish: Unfinished wood ◈Footrest: Japanese cypress (100mm x 300mm) ◈Foot Stopper: White wood ◈Slider: White wood ※White wood: Coniferous trees from Northern Europe