About Our Product: 1-This product is sold directly from the factory, so the new product has a little taste and can be left outdoors for one day. Does not affect the product experience. Do not buy it if you mind. 2-The pillow core is not washable, just put it in the window for ventilation. The cover can be replaced and washed. 3-This product can be used in all seasons. It can be used in homes, offices, cars. It is used for people with back pain, butt pain or people with hemorrhoids, long-term wheelchair users, long-term driving people, and sedentary office workers. Description: -The appearance is comply with buttocks and thighs curves, natural and perfect supporting, can help you to shape the hip line, avoid the buttocks become flat because of sedentary. -Memory foam has the characteristics of temperature susceptibility and viscoelastic properties. According to the hip temperature and movement, can be adjusted the shape, close to the hip completely, reach zero pressure. -The behind is U shape design, relieve spinal pressures. -It not only can control buttock expand, but also can correct bad sitting habits and make your buttocks more beautiful. -It can make your blood alive more, even you are sitting for a long time. Specification: Material: short plush+memory foam Density: 50D Type: Seat Cushion,Lumbar Pillow Color: Black/ Purple/ Grey Seat Cushion Size：45X35X7CM Lumbar Pillow Size：34X32X12CM Weight: 500g/Piece 1.1Kg/Set (Regarding weight and size, there may be some measurement errors, thank you for your understanding.)