Compatible models: Bike saddle for Cube Stereo Hybrid One77, Stereo One, Stereo One55, and Streamer. It can be adapted to most standard bicycles, making replacement convenient for riders with different bikes. Please confirm your bicycle saddle type before ordering. quality materials: Made of PU leather with good breathability and neatly stitched edges. The surface feels soft and is waterproof. The interior is filled with density memory foam for elasticity and support, helping to buffer vibrations and provide a comfortable ride. Breathable design and shock absorption: Central ventilation slots on the saddle surface promote airflow between the rider and the saddle, helping to reduce stuffiness and heat buildup. The bottom features shock absorbing balls that flexibly respond to impacts from different directions, enhancing overall ride comfort. Ergonomic design: The front of the saddle is relatively narrow to minimize thigh friction during pedaling, while the rear is widened. An ergonomic decompression groove is shaped to fit the perineal area, effectively relieving pressure and reducing the risk of compression of sensitive parts. Use scenarios: Daily city commuting on Cube or other standard bikes, where comfort and ventilation matter during short to moderate rides. Longdistance or endurance rides, where memory foam support and vibration damping improve allday comfort. Bike upgrades or replacements for multiple riders on family or club bikes, providing a consistent, comfortable seating option across different models.