Hollow integrated cushion for mountain bicycle. Specification: Comfortable style. Size: 270*160mm. Colour: Black and white. SURFACE: PU SURFACE. Seat bow: chromium-molybdenum steel bow. Weight: about 405g. This product uses modern technology and production technology, ergonomic design reduces 40% of the force, ventilation holes, guide grooves, elastic shock absorber shell, anti-skid PU skin design, so that riding comfort greatly improved.