【Ergonomic Design】 You can sit and work for long periods every day, and this comfortable memory foam cushion can relieve your fatigue. The ergonomic design provides extra support that adapts to the natural curves of your posture and spine. It can relieve sciatica and back pain, prevent spinal injuries and hemorrhoids, alleviate muscle fatigue, and reduce pressure on the intervertebral disc. 【Excellent and High Quality】 To relieve coccyx pain and hemorrhoids, the donut cushion is made of high-quality polyester fiber material + 3D Space Memory cotton, which is removable and breathable, ensuring good air circulation + highly elastic memory foam as the inner cushion. Adapts to your personal shape. 【Scientific Zone Design】 The donut cushion has a hollow design at the coccyx/middle/legs, which effectively relieves pressure and evenly distributes body weight. It can reduce pressure on the intervertebral disc. Protects the coccyx, reduces pressure on the buttocks, protects the buttocks, prevents fatigue after prolonged sitting, and ensures good elasticity and deformation. [Firm and Strong Support] The sciatic nerve cushion with strong support and good memory. It is reusable and can be disassembled and cleaned, making it a convenient place to use. Suitable for use under 220 lbs. Dimensions are 45*41*7.5 cm. [Professional and Multifunctional] The office cushion is perfect for use in the office, frequent business trips, sporting events, pregnancy, in the car, on the plane, or on the train. Effectively reduces pressure on the back. Increases blood flow, prevents lower back pain, and helps relieve muscle fatigue. Easy to carry and clean. Please note that this cushion is made of high-quality materials.