Description: Integrated Design for Comfort and Security: This children's seat cushion features a unique integrated design combining the seat and handrail, providing a more comfortable and secure riding experience. The handrail can also function as a backrest, offering versatile usePremium Materials for Durability: Crafted with quality sponge filling and PU leather surface, this bike rear seat cushion offers good texture, anti slip properties, and wear resistance. It ensures both comfort and durability for long term useEnhanced Stability with Reinforced Structure: The Bike Back Shelf Seat Cushion is equipped with a double nuts reinforcement design to ensure it remains securely in place during rides, enhancing stabilityUniversal Compatibility: Designed to fit most mountain bikes and cycling seats, this cushion allows you to adjust its position according to your needs, making it adaptable to various bike modelsBoosting Features for Children: Specifically designed for children, the added handrail function effectively prevents falls, significantly improving passenger security during rides Specification: Material: PU Leather, Sponge, Metal Size Chart: Seat Cushion: 32cmx15cmx5cm/12.60inchx5.91inchx1.97inchHandrail:20.5cmx13.5cm/8.07inchx5.31inch Package Includes: 1Bike Rear Seat Cushion Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.