This is not a chew proof item. The ripstop ballistic liner is durable and will hold up to wear and tear, but it is not as strong as our Tough covers and is not scratch- or chew-resistant without one.

This listing is for a mattress only, and will arrive as a single item that has been compressed and rolled for shipping. It must be unrolled and allowed to expand upon arrival before it can be covered and used. We recommend shaking the mattress out when you first unroll it to help it fluff up faster.

The mattress liner is made from 600D ripstop ballistic polyester fabric, including the yellow breathable bottom. There is a PU waterproof backing applied to the inner surface of the gray top and sides of the liner. The inner chambers of the liner are filled with CertiPUR-US shredded polyurethane foam.

Our ballistic liners have a waterproof PU backing applied to the inner surface of the gray material (the yellow side does not have this, so that the mattress can breathe). The backing will help keep water from soaking into the foam, but seams can be a point of entry for fluid. For that reason, our liners are considered water-resistant, not 100% waterproof. Clean up spills as quickly as possible to reduce the chance of leakage into the bed, and avoid submerging the bed or allowing it to sit in puddled water.

Please note that water-resistance refers to regular water, as in moisture from weather, sprinklers, or water bowl spills. Bodily fluids like urine and vomit are more caustic and can seep past the PU backing if not wiped up quickly. Frequent exposure to urine or vomit can damage the protective coating, making the liner more vulnerable to fluids in the future.

We recommend spot-cleaning when possible, as the liner cannot be separated from the shredded foam. If necessary, this mattress can be machine washed*, but we recommend doing so in a commercial-sized washer/dryer at your local laundromat due to the size and weight of the mattress when wet. Wash in cold water on delicate, then machine dry low heat until fully dried. It will likely take multiple drying cycles, since the foam can hold a lot of water. To avoid the risk of mildew, do not cover the mattress until it has fully dried out inside.

*Do not machine wash if the zipper opens easily or seems loose, or else you may end up with foam escaping into your machine.

No, this mattress does not have the right shape or thickness to properly fill in the cushion space of an Oval Bolster bed. It should only be used with the Tough Ripstop™ Round Pillow Dog Bed Cover or Tough Ripstop™ Round Bolster Pillow Dog Bed Cover.

This is a mattress, not a full bed, and it is not meant to be personalized. If you are looking for a full bed in this style that can be personalized, please check out our Tough Ripstop™ Round Pillow Dog Bed instead.

For best results, measure the diameter of your current bed and select the mattress size option that matches most closely. If you no longer have the mattress, lay the cover out flat on the floor, smooth out any wrinkles, and measure across the widest part of the center to get the best dimensions.

You can also check the care tag on the inside of the cover, which should state the size for you, or you can review your order history by accessing your account on our site.