About this item Material: Use elastic double-layer 3D three-dimensional honeycomb ice silk fabric. Special two layers design.Ventilation layer and Cooling layer.Solves the problem that vents blocked by human body compared to the normal cooling cushion to effectively eliminate hot sticky seats.So you are always cool and dry. Adjustable air volume: The wind power of the ventilated seat cushion can be adjusted in three gears. You can adjust it at will according to the required wind power. Silent operation: The use of innovative noise control technology, the use of high-speed silent fans, and the reasonable flow of the air deflector, effectively reduce the noise generated during operation and improve comfort. Easy to use: Low voltage design, just insert the seat cushion into the USB port, and the fan will circulate cold air to your hind legs and thighs. USB is compatible with various electronic devices, such as computers, chargers and car cigarette lighte…