Product description Purpose and benefit: This rear seat cushion converts a standard rear rack into a more comfortable passenger seat. It improves passenger comfort on short errands, family rides, or longer outings by providing a defined seating surface and cushioning on the rear rack. Compatibility: Designed for mountain bikes and electric bicycles. The pad attaches to the bike’s rear luggage rack, making it a direct-fit comfort upgrade for most rear-rack setups. Size and fit: Dimensions are 30 cm x 15 cm x 3.5 cm (11.81 in x 5.91 in x 1.38 in), offering a compact but supportive seating area that does not excessively increase overall rack size. What’s included: 1 rear bicycle saddle pad, delivered ready to install and use. Easy installation: The cushion fastens to the rear rack for quick, tool-free setup so you can add passenger comfort in minutes. Practical use scenarios Weekend family rides: Add a small cushion for a child or family member who rides on the rear rack to make short trips more comfortable. E-bike commuting with a passenger: Provide extra padding for a passenger on an electric bike without modifying the frame. Quick errands and grocery runs: Create a more comfortable temporary seat when carrying a passenger on local trips. Why choose this product Simple, effective comfort upgrade for rear-rack passengers. Fits common mountain bike and e-bike rear racks. Compact dimensions provide support without bulk. Single-piece package ready to attach and use.