LockBlock knife block's innovative design locks knives safely inside the block and requires an adult-sized hand to operate it, meaning that most children aged 5 and under will be unable to remove any knife. As each knife is placed inside a knife slot, its blade is held securely by the unique cam-lock mechanism. Pulling on a knife only increases the force of the grip so knives cannot be simply forced out of the block. The LockBlock Knife with its univerisally sized knife slots accomodates most common knife sizes. Block Care&Use: Wipe clean with a damp cloth.