Memory foam pain relief: This cushion is not only an accessory, but also can improve a person's lifestyle; to a certain extent, it can relieve pain from longterm sitting, childbirth, sciatica, low back pain and coccyx pain, providing you with proper support and comfort. Easy to clean: This nonslip chair seat cushion is designed with a long invisible zipper and a removable chair cover, which is convenient for machine washing and drying; the easy cleaning function makes your life simpler Safe and antislip function: Our memory foam seat cushion is designed with a highquality nonslip bottom, which helps to keep the cushion in place for a long time on most surfaces, so you don't have to worry about readjusting or fastening with straps, and you can focus on yourself. Soft and comfortable material: The square seat cushion is made of memory foam material with a short plush cover, which is soft and comfortable to the touch, and the high elasticity makes these cushions not easy to deform and collapse, and the removable and washable cushion cover also provides you with a good sitting experience and allows your body to get a good rest. Vacuum packaging: 20 20 5 inches (about 50.8 5.2 cm) chair cushions are vacuum packed and filled with memory foam. They may be relatively flat after receiving them. It is recommended to leave them in a static state for 48 hours before receiving them, or to help them return to their original state faster by patting or kneading them.