A cushion that guides the pelvis into the correct shape just by sitting on it, correcting distortions and leading to slender lower body and correct posture. The left and right convex shapes tighten the pelvis, and the front widening adducts the legs inward. The Y-shaped inclined surface naturally guides the legs forward, downward, and inward. It leads to correct posture through the action of pushing up the pelvis from both sides and the internal rotation descent by the Y-shaped inclined surface. Patented product. Uses: Pelvic cushion, pelvic support, seat cushion, zabuton (Japanese cushion), pelvic correction, for dieting. Material: Surface fabric/Back fabric: 100% polyester, Filling: Urethane foam, polyester cotton, polypropylene Weight (kg): 0.25 Dimensions (length x width x thickness) (mm): 320 x 370 x 80 Color: Pink Condition: Used a few times and didn't suit me, so it has been stored at home. There are some scratches, marks, and fiber fluffing, so please consider this if you don't mind. [Shipping Method] Waterproof measures will be taken, and it will be compactly packed. Please note that the cushion will be folded and placed in a Letter Pack envelope. ■Please Note■ ・Please refrain from price negotiations. ・Cancellations after purchase are not supported. ・Please be sure to read the profile. Also, many items are on sale for decluttering. We will respond to "bulk purchase requests" with discounts within the possible range.