CNBEYOUNG Car Hammer, Seatbelt Cutter Window Breaker Emergency Escape Umbrella(Auto Open/Close)-Black Glass Breaker & Special Steel Blade. Strengthen alloy impact needle break the window in senconds and razor-sharp steel blade cuts through seat belts for when doors and windows fail to operate due to vehicle damage,fire or submersion. Light Reflection Strip. Reflective strip light up when encounter the illuminate of vehicle light, a most unique umbrella with safety and convenience in mind. Quality Material. The CNBEYOUNG car-safety umbrella are made of chrome plated metal shaft, strong metal frame and 190T polyester fabric which will protect you in a drenching downpour. Convenient Automatic Open & Close Canopy. Auto close is handy for quick entry into a car, building or tent. Auto open offers instant cover from rain with a fast & snappy opening action. One handed operation is the other advantage giving you the capability to easily carry items with your other hand. Additional functions will never be expected to be used.But whenever you want, it will just be right here for you.