1. The slow rebound memory foam cushion is the preferred curved buttock design for sedentary people, and the slow rebound memory foam inner core keeps your buttocks in an S-shaped curve at all times. 2. Sedentary depression surrounds the buttocks on both sides when you sit down, the buttocks on both sides are stressed first, and the middle of the buttocks relieves the space and fits moderately soft and hard. 3. Hollow ventilation and dehumidification. The hollow can keep the air in the buttocks smooth and provide the buttocks with a refreshing and hygienic environment. It solves the hot and humid airtight problem for long-term sedentary people. 4. Ergonomically designed with a special \"hip design\", which is recessed and surrounds the buttocks to avoid hidden diseases such as hemorrhoids caused by poor blood flow in the buttocks caused by sedentary pressure. 5. Sitting posture correction conforms to the ergonomic structure, and the even support force from the seat cushion on the buttocks can make the back naturally stop stretching and maintain a correct sitting posture. Effectively corrects the sitting posture of modern people. The washable jacket 3D air layer fabric is breathable, wear-resistant, and textured. Product category: Cushion Size: all sizes Style: modern and simple Color: B: navy blue Material: Cotton Size: 40 x 30 x 7cm Package contents: 1 x cushion Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.