Features: 100% brand new and high quality When sitting on the mat, weight can be dispensed without placing the pressure, lower and buttocks. This ergonomic mat will support healthy blood circulation to facilitate good postures. This kind of mat is light, which can be easily expanded and deflated. Includes a small pump. When the donut pad is not used, it is folded by extruding the opening valve and folds it into a running storage bag to maintain clean and not damaged. The mat will be suitable for the shape of the bottom and anti-slip, so that it is safe to use most chairs. Sit down again and comfort it, avoid the pain and discomfort. Whether you are sitting, you can now feel comfortable, at home, on the dining table, on the sofa or office. Suitable for use in a car, train or aircraft. It can be used to suppress the pain conditions accompanying the tail bone, sciatic nerve, hemorrhoids / acne, pregnancy, tail bone, prostate and bed obstruction. It can also be used with wheelchairs and sitting in bed. Package Includes: 1x Inflatable Pillow(with pump) Specifications: Material: PVC Diameter: Approx.36cm/14.17in Color: Blue, Coffee, Dark Blue, Green, Gray, Red(optional) note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.