Pixnor Baby Child Kids Foam Safety Door Knob Covers (Brown) Color: Brown. Material: EVA foam. Size: 130 * 35mm. Shape: Spiral. Dust-free, non-toxic, odorless, safe and eco-friendly. Prevent child and adult from crashing the door handle to injure themselves. To prevent electrostatic, antifriction. Flexible and non-slip, it is easy to install.