Special design: special O shape ,which is safer for children.Because the strong 3M tapes give you enough security and makes sure your children explore safe.Use on flat surfaces or corners and no more damaging existing furniture after removal. Easy to use: Child Safety Fridge Lock With one hand and lock by itself, it will get unlocked easily and open the fridge door by pulling the two buttons of the lock in the meantime. The lock will get locked automatically without extra steps. It is hard for babies and children but conveniently to open with one hand for adult. application: Refrigerator Freezer Door Lock it is applicable to most refrigerators to prevent uninvited items from entering the refrigerator in your work area, prevent children from opening the refrigerator, eating something their parents do not want them to eat, or hiding themselves in the refrigerator. It can also prevent pets from opening the refrigerator. Material: The child safety locks are made of Eco-friendly ABS.They are BPA-free and can be used with confidence. Size: Refrigerator Locks Size About 4.33*2.76inch(11*7cm).