How does it unlock:Currently he release button may not work for limited by the vehicle side this is not a product quality issue. Please use the button on the ORIGINAL NACS plug, the APP, or the car s CONSOLE to disconnect IP55 Level Waterproof :Our NACS extension cord both sides are designed with IP55 waterproofing. Operating temperature ranges from -22 F to 122 F, making extension cables perfect for outdoor use How to use:Connect the TSL extension cord to your existing charger,slide the lock button to lock position ,wait 30 seconds. Then connect it to the car. If Connecting it to the car first, it often shows up as "not ready" and won't charge. How does the compatibility Our TSL charger extension cable is compatible with NACS mobile charger (32A max), wall connector (48A max), and destination connector (48A max), catering to the charging needs of Model 3/Y/X/S Contain portable bag Sure,contain the portable package bag,NACS extension cable,user guide What about the materials The NACS TSL extension cable plug is made of PC+ABS, with pure copper conductors featuring silver plating for efficiency, and the cord uses high-strength TPE for safety and reliability.