The K&H Pet Products Deluxe Lectro-Cover is a soft, 100% polyester gray Berber. This washable cover offers added comfort to our outdoor small size Lectro-Kennel heated pads. The pillowcase design ensures a secure fit and features a zipper closure for easy removal. Its soft weave allows the warmth to radiate through it safely. The K&H Pet Products Deluxe Lectro-Cover is an excellent add-on item for Lectro-Kennel pad owner. It’s a great idea to keep an extra cover on hand so your furry friend’s Lectro-Kennel Outdoor Heated Pad is always covered, easy to swap out while washing the other. Designed to fit K&H Lectro-Kennels and K&H Extreme Weather Kitty Pads only. One year limited warranty. SIZING - Small/Kitty: 12.5" x 18.5" Medium: 16.5" x 22.5" Large: 22.5" x 28.5". Note: Please do not cover K&H Outdoor Heated Pads and Beds with other bedding or materials.