YA-MAN Core Slim Plus A new release from the popular Core Slim series, supervised by Micaco, a specialist in pelvic care! Supports the pelvis in the correct position and provides muscle training just by sitting. Compared to sitting normally, the muscle stimulation of the external oblique muscles increases by about 160%! *Muscle discharge of the external oblique muscles compared to when not in use (Chiba University research) Furthermore, the inclination of the seat also targets the hip joints and adductor muscles. ● Popular reasons: ・ "Beautiful posture & core training just by sitting" The T-shaped backrest and inclined seat support the pelvis in the correct position. A state where the pelvis is upright means that the muscles on the abdomen and lower back are being used in a balanced way. Therefore, you can train your muscles just by sitting! You can use it in your favorite positions, such as sitting with your legs extended, cross-legged, or seiza. [Condition] The family has used it a few times, and it has been stored at home, so if you are looking for a perfect item, please purchase a new one. ■ No box or instruction manual Please purchase with the understanding that it is a used item. Instant purchase is welcome No pets, no smokers ■ About the items for sale ■ The colors and textures in the photos may look different depending on your device. There is also the possibility of overlooking small defects. Please refrain from purchasing if you are overly concerned with perfection. ■ About packaging ■ * We will use recycled materials such as packing materials and cardboard boxes and ship with simple packaging.