Provides solid security for bicycles, greatly reducing the risk of theft. Outer lock body wrapped in soft, wearresistant, environmentally friendly materials to prevent scratching the bike frame during locking, preserving appearance and extending service life. Waterproof and dustproof design with sealing treatment resists rain and dust; helps protect internal mechanical components and, where applicable, electronic parts, ensuring lock stability and reliability in harsh weather or dusty environments and extending service life. Heavyduty chain lock suitable for bicycles, scooters, lawn mowers, ladders, fences, toolboxes, sports equipment, strollers, and other outdoor or storage applications; delivers reliable protection in busy urban environments or at home. Use scenarios City bike parking: secure your bicycle to a rack in busy urban areas; the soft outer layer protects the frame finish as you lock. Home storage and equipment protection: secure lawn mowers, toolboxes, bikes, and sports gear in outdoor or garage spaces; weatherproof performance reduces maintenance. Outdoor work sites or travel: protect equipment in dusty or rainy conditions; the lock maintains function and reliability.