I purchased this in January of this year and used it for about two weeks, but it didn't suit me, so I'm selling it. Please feel free to ask any questions. Color: Black Body size (approx.): Width 40 x Depth 40 x Height 10cm Weight (approx.): 450g Weight capacity (approx.): 50kg - 135kg Materials: [Back] Synthetic polypropylene [Surface] 85% polyester, 15% spandex : Polyurethane, silicone, high-density foam Accessories: Dedicated carrying bag Country of origin: China Keeps good posture by firmly supporting the pelvis [Features] ・Slightly more functional than the MediCore Relief, and a new MediCore series PRO with slightly different characteristics from the MediCore Relief LUX. ・Spandex, which is used in swimwear and leggings, is used as the material. ・Spandex, which is said to be representative of stretch materials, has rubber-like properties but is stronger than rubber and less likely to deteriorate. ・Jacquard weave, which is used for high-quality towels, is used for the weave. It has a fluffy yet firm fabric and a three-dimensional finish. ・Taking advantage of the characteristics of the material and weaving, this product has elasticity, breathability, and quick-drying properties. ・Ideal for long hours of sitting work and tasks. Comfortable for a comfortable day with a soft sitting feel.