The Jool Baby Door Knob Covers are a set of 4 child safety covers designed to prevent curious babies and young children from accessing doors. Made by Jool Baby Products, these covers are easy to install and are a practical solution for keeping your little one safe while exploring. The product dimensions are 3 x 2 x 2 inches and it weighs 3.52 ounces, making it compact and lightweight for convenience. With no batteries required, this product ensures a simple and effective way to baby proof your doors.