- Multi-Specification Compatibility: This rear box adaptation system is designed specifically for motorbike top boxes with a capacity of 45-65L. It easily accommodates various box shapes, including square and streamlined designs. The innovative upper and lower split back cushions securely fit your box using extended side buckles, allowing for 360° angle adjustments to ensure a stable and secure seating position for passengers, preventing slippage on bumpy rides. - Ergonomic Comfort Design: Featuring a double-layer support structure, the combination of high-density memory foam and a breathable mesh layer provides 40% more contact area than traditional backrests. This design perfectly contours to the lumbar spine, distributing pressure evenly and reducing fatigue during long rides. The thickened lumbar support alleviates discomfort, while strategically placed ventilation holes promote airflow to keep you cool. - Durable and Weather-Resistant Materials: Made with military-grade fabric, the outer layer consists of 1.2mm thick TPU waterproof coated PU leather. It has successfully passed rigorous tests, including 500 hours of salt spray exposure and 50,000 friction cycles, ensuring exceptional durability. This material withstands temperatures as low as -20°C without cracking and is resistant to UV aging. Stains wipe clean easily with a microfiber cloth, and it remains effective even after exposure to heavy rain or mud. - Adaptive Cushion Core: The cushion features embedded 30kg/m³ density polyurethane foam with a resilience rating of ≥ 85%, allowing it to quickly adapt to the passenger's body shape. The honeycomb damping layer at the bottom effectively absorbs road vibrations, while the soft top layer minimizes the discomfort from hard surfaces. The cushion supports a maximum load of 120kg, balancing load-bearing capacity with optimal comfort. - Practical Use Scenarios: 1. Ideal for long-distance touring where comfort and stability are essential for both rider and passenger. 2. Perfect for daily commutes or weekend rides, providing a secure and comfortable seating solution. 3. Great for off-road adventures, ensuring passengers remain stable and well-supported over uneven terrain.