WEST Cycling Soft Ergonomic E-Bike Saddle Widen Thickened Electric Bike Cushion Breathable Shock-absorbing Bike Accessories Function: 1. Rear light mount: The saddle has a rear light that improves visibility at night and safety while riding. Please note that the product does not come with a tail light. 2. Reduced Drag: The center of the seat features a sunken design that reduces pressure on sensitive areas, improving overall comfort on long rides. 3. High Rebound Material: The seat is filled with high rebound material that provides a comfortable seat while reducing impact shock from bumpy roads. 4. Shock Absorption: Designed with high-elastic shock-absorbing balls, this bicycle cushion effectively absorbs shocks and vibrations for a more comfortable ride. 5. Breathable Holes Design: The chair features breathable holes to promote air circulation, preventing heat and moisture from building up and keeping you cool and dry. Specification: Main material: PU polyurethane steel Product color (optional): red, blue, black Product size: about 260mm (10.24in) x 210mm (8.27in) x 55mm (2.17in) Product net weight: about 660g