alicedreamsky memory foam seat cushion office chair, comfort for back coccyx and tailbone pain relief, work from home accessories (black) alicedreamsky <p><b>product information:</b></p><p>product: memory foam cushion</p><p>color: black, brown, gray, royal blue</p><p>cushion core material: memory foam (slow rebound)</p><p>cushion cover material: flannel</p><p>cushion shape: u-shaped cushion</p><p>size: 18*14*3 inches</p><p><br></p><p></p><p></p><p><b>product features:</b></p><p>1. u-shaped design: ergonomically designed to relieve pressure on the tail vertebrae (distribute the weight of the buttocks and tighten the buttocks to fully relieve the pressure on the tail vertebrae. provide correct support to help maintain a good sitting posture, relax the buttocks muscles, and relax and comfort. relieve stress, prevent blood loss, leg numbness, lumbar strain, and maintain the natural curve of hip and waist.)</p><p>2. memory foam cushion core, full support: when the memory foam inner core feels pressure, it will slowly rebound to support and disperse the pressure to make you feel comfortable.</p><p>3. flannel cushion cover: comfortable and skin-friendly flannel material; good air permeability; wear-resistant and not easy to pilling; intimate zipper design, easy to disassemble and clean.</p><p><br></p><p></p><p></p><p><b>note about the product:</b></p><p>1. the memory foam cushion core cannot be washed or exposed to the sun.</p><p>2. if there is a smell after you receive the cushion, please don't worry, this is a normal phenomenon and will not affect the use and human health. since the product has been in a sealed package after production, it can be used after put it in a ventilated place for a few days.</p><p>3. the memory foam is a temperature-sensitive material, and the product changes with the seasons, there will be a certain degree of soft and hard changes, which is a normal phenomenon.</p><p>4. after you have used it for a period of time (2-3 months), please take the cushion to a ventilated place to help the memory foam cushion core maintain its elasticity.</p><p><br>