Appropriate Sizes: the outlet gasket insulation have one size that offers a universal fit, each one measures approx. 63 x 107 mm/ 2.5 x 4 inches, and you can cut out according to your own needs Insulation Material: the foam outlet gasket is made of quality EVA foam material, lightweight and windproof, soft and insulating, which can effectively keep away from accidents Large Amount: you will receive 30 pieces of light switch insulation in the package, sufficient quantity can meet your daily needs and replacement, providing more convenience for you Sealing Performance: the appropriate size makes the outlet insulation pads fit the socket nicely, and the outlet is better sealed, then the gas is not easy to flow out, therefore you can use them with confidence Easy to Use: this interior wall insulation is simple to install without much effort, saving space and time, just follow the line to get a foam outlet gasket, and it is light in weight, convenient to store