Fits 95% of common folding bikes (frame tube diameter 28–40 mm) — corrosion‑resistant aluminium alloy for long life in all weather conditions. Why you need it Securely converts a folding bike or city bike into a practical cargo platform without adding unnecessary weight. Reduces rider fatigue by distributing load forces more evenly, making daily commutes and longer rides more comfortable. Prevents rack slippage and vibration-related loosening so your gear stays stable and safe. Key benefits and features Compatibility: Designed to fit the majority of folding‑bike frames (28–40 mm tube thickness). Works with most common models used for commuting and urban riding. Durable material: High-quality aluminium alloy resists corrosion and withstands outdoor use year‑round. Improved ride comfort: Scientifically developed support system optimizes force distribution to reduce muscle strain and balance load for less fatigue on medium and long rides. Flexible mounting: Modular components plus a triple‑hole adjustment system let you adapt the fit to different folding‑bike geometries for a stable rack connection. Vibration damping without extra bulk: Engineered to minimize vibration transfer while keeping weight low. Secure hold: Innovative connection design uses double‑secured adapter elements to prevent slipping under heavy loads, maintaining stability and safe force distribution. Practical applications Daily commute: Carry a laptop bag and groceries with a stable rear rack that reduces strain and holds position over rough pavement. Weekend errands: Attach panniers or a small crate for shopping trips while keeping the bike balanced and vibration under control. Urban touring: Use with panniers on longer city rides where comfort and secure load carriage matter. Simple, reliable performance for folding bikes and city bikes — durable materials, adaptable mounting, and a secure connection that keeps your cargo steady and your ride less tiring.