1.[COOL GEL CUSHION]The gel design cools off seat instantly and prevents heat accumulation after long sitting. Great for heat intolerant or high temperature people and loved by all in summer days. Gel core also enhances the density of cushion for greater support. 2.[GREAT SUPPORT & SUPERIOR COMFORT]Premium high density memory foam with gel layer designed for great support. Transforms any hard chair into a super soft and comfortable upgraded seat. 3.[SPECIAL DESIGNS]Non-slip rubber bottom for non-slip seating. Extra inside lining to protect foam from getting dirty. Removable and washable cover for easy cleaning. 4.[RELIEF OF BACK PAIN & SCIATICA]Ergonomic U shape design perfectly fits curve of hip and improves blood circulation. Effectively relieves back pain, low back pain, sciatica and other issues caused by sitting for long periods of time. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store