We are considering applying for a utility model for the world's first unique stretch board. The product name is "Achilles-ken Taikun" (Achilles Tendon Strongman). To maintain a beautiful walking posture, it is necessary to straighten your back. Also, as you age, your legs and lower back weaken, so you need to strengthen your Achilles tendon to prevent falls. Please use the Achilles-ken Taikun to strive for beauty and health. Also, since it is made of wood and is unpainted, you can customize it to your liking by applying stickers or drawing pictures with a marker. ❤ Features ❤ ◈ Beautiful wood grain... See Photo 1 The footrest is made of Japanese cypress. The wood grain is beautiful and provides a sense of healing. It also has a woody fragrance. ◈ Warm... See Photo 1 Because it is made of wood, you can feel the warmth even when you step on it with bare feet. ◈ Mode switching... See Photo 2 By rearranging the slider, you can use it at your preferred angle. ・Mode A: 16° to 23° (weak to medium) ・Mode B: 21° to 31° (medium to strong) ◈ Stepless angle adjustment... See Photos 3-8 By moving the slider, the minimum to maximum angles can be adjusted steplessly. ◈ Excellent stability... See Photo 9 Due to the 3-point support, it is extremely stable even when you step on it. ◈ For everyone... See Photos 3-8 With strengths ranging from strong (31°) to medium to weak (16°), anyone, regardless of age or gender, can use it. ❤ Specifications ❤... See Photo 1 ◈ Dimensions: Width 250mm x Length 300mm ◈ Weight: 930g ◈ Surface finish: Wood, unpainted ◈ Footrest: Japanese cypress (100mm x 300mm) ◈ Foot stopper: White wood ◈ Slider: White wood ※ White wood: Coniferous trees from Northern Europe