Features: Make of foam and alloy, it is soft and have good elastics, wear resistance, and certain durability, which can bear long terms cycling use. Bicycles seat cushion can not only provide a comfortable sitting feeling, but also effectively relieve fatigue and discomfort caused by long sitting postures. The grooves in middle of the Saddles cover is ergonomically designs and the air flows from middle of the cushion, making it breathable and dissipates heat without being stuffy. Easy to install and disassemble, suitable for most mountain and road vehicle seat. Whether mountain bike, road bike or fold bike, exercise bike seat cushions can all be perfectly fit. Specifications: Component: Foam and Alloy Type: Black Without taillight/Brown Without taillight/Black with taillight/Brown with taillight Size: about 27x25.5x7cm/10.63x10.04x2.76inch Package Includes: 1pc Bicycles Saddle without taillight/1pc Bicycles Saddle with taillight note: Please allow 1-2cm errors due to manual measurement, make surely that you not mind before order. Due to difference between different monitors, the picture may not reflect the actual color.