ONE-HANDED ACCESS: The baby gate is designed with a one-touch release safety lock. A secure spring-loaded latch keeps the gate safely closed when not in use. Easy one-handed open and close operation, Fit with extension parts 10cm,20cm,30cm, and 45cm.AUTO CLOSE: No need to worry about forgetting to lock the gate because this one will close itself automatically due to gravity. Open less than 90� and the gate will close itself. Open past 90� and it will stay open.DURABLE AND CONVENIENT: The all steel design is durable and convenient with a walk-through door.