Comfortable SittingThe dimensions of the chair cushion are 18.1 x 14.2 x 3.2 and the dimensions of the lumbar support pillow are 13x 4x 13. The size meets the needs of most people, and the shape of the product is ergonomically designed to effectively relieve the discomfort caused by sitting in one place for extended periods of time. Thoughtful DetailingOur seat cushions and lumbar support pillows are made of fabric with quality zippers. The bottom of the seat cushion has a special non-slip design and the back of the lumbar support pillow is installed with adjustable straps to fit chairs of various sizes. Convenient to UseThe cover of the seat cushion and lumbar support pillow is removable and made of machine washable fabric for easy cleaning. The carrying handle on the seat cushion makes it easy to carry. MaterialsThe core of the seat cushion and lumbar support pillow is made of foam, which is both soft and supportive and not easily dented. Soft memory foam gently conforms to your body. Suitable for Work and HomeGreat present for anyone who sits for long periods of time. This product can be used at home, as an office chair cushion, or as car seat cushion, and also for people who often sit in wheelchairs.