CKTG Black Felt Knife Guard 300mm (11.75") The Chefknivestogo black felt blade guards are sturdy black plastic on the outside and soft felt lined on the inside. They're easy to slide onto your knife to protect you and your knives. These guards will help keep your knives sharp when storing them in your knife bag or kitchen drawer. Please make sure you dry your knives thoroughly after washing and before you place them into the guard. Stay Sharp!