Mr Snugs / KatDen Cat Kennel Mattress & Liner
Mr Snugs / KatDen Cat Kennel Mattress & Liner additional 1Mr Snugs / KatDen Cat Kennel Mattress & Liner additional 2Mr Snugs / KatDen Cat Kennel Mattress & Liner additional 3Mr Snugs / KatDen Cat Kennel Mattress & Liner additional 4
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RRP: £2.99


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Designed specifically for the Mr Snugs & KatDen outdoor cat kennels, this mattress and liner set is the perfect way to keep your cat warm and dry no matter what the weather is like outside.

  • Dimensions of mattress:16" x 16" 
  • Dimensions of liner: 18" x 14" x 14" (H x W x D)
  • Perfect for outdoor cat kennels 
  • Well insulated 
  • Soft and comfortable 
  • Removable mattress
  • Machine washable
  • Attractive paw print design 
  • Suitable for cats or small breed dogs

The cosy mattress (which can be used separately) provides a warm, comfortable base while the liner will fit snuggly inside to provide extra warmth and insulation from the elements. Both parts can easily be removed and washed when required.


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Customer Reviews4.95 4.9/5 Based on 30 reviewsShow all reviews


Cat very happyReviewed by Suzdearden on 14 Sep 2021

Fits snugly into the Katden and cat that comes into our garden seems to love it. The outside edges are not sewn in so might collect dirt etc but all washable so should be ok


AddictibeReviewed by Lyndonbaker66 on 30 Nov 2020

First I bought one cat kennel and BOTH my outdoor cats LOVED it. So I bought another. They are in there more often than not so, thinking of washing the liner and mattress, I purchased these as spares. Fortunately we have only been adopted by two regulars. There isn't room for a third cat kennel in our porch.


AwesomeReviewed by Marijkehodgson1 on 25 Nov 2020

My cat approves 😬


MAKES KAT DEN REALLY COSYReviewed by Senkcon on 15 Oct 2020

Fits perfectly into Kat den which i purchased for stray cat that lives in our garden. makes den snug and cosy and cat loves it. Noticed the mattress does seem to get dirty quickly but it remains completly dry as kat den is really weather proof. may be a good idea to buy a second mattress so one can go in wash. i was worried that big tom cat would be cramped as it is quite thick and reduces space in den slightly but he is never out of it .So glad i bought both items it is lovely to know he is out of the wind and rain when it is blowing a gale outside. Every night i look out and he is curled up inside and every morning he comes out warm and dry. Dont know what cat would do if he didnt have this cosy shelter now weather is turning wintery. Den and liner/mattress well worth money, best pet products i have ever purchased.


Mattress & LinerReviewed by Paulinebirving on 08 Oct 2020

It looks like stray cat is very snug and not leaving in a hurry!

Is the optional cat flap compatible with microchips to stop other cats getting in?
The fitted cat flap is a 2-way in/out flap which is not controlled by microchip.
Is this kennel big enough for two adult cats?
The KatDen is recommended for one cat, however we have had reviews from many customers who have had two cats using them.
Can you confirm how heavy the Mr Snugs cat dens are please? I need to know that it won’t blow away in windy weather
Hello, the KatDen weighs 5kg to help keep it secure in windy conditions and it was designed with UK weather in mind. We have sold many thousands and not had any customer feedback regarding issues with the wind.
Will this cat shelter keep cool in the summer? Concerned as it is made of plastic it may heat up too much.
This product will protect animals from all seasons, so through the summer it will provide them with shade. We've had no reports of product heating up too much and this item has been sold for a number of years now.

Free delivery on orders over £45

Spend over £45 and we'll deliver your order using a Next Day delivery service for free!* (This is after the dispatch times displayed on each product page)

All delivery charges will be automatically shown at the checkout. We're very sorry but this offer does not apply to UK highlands and Islands postcodes.

Orders under £45

Order WeightDelivery ServiceDelivery PriceDelivery Time (excluding handling)
0kg - 2kgRoyal Mail 48 Tracked£3.492 - 3 Days
0kg - 2kgRoyal Mail 24 Tracked£4.991 - 2 Days
0kg - 30kgDHL Next Day£5.991 - 2 Days
30kg+DHL Next Day£0.32p per kg1 - 2 Days


*For orders over £45 where the total order weight is greater than 30kg, the delivery for the first 30kg will be free and then just 32p per kg thereafter. Large items can incur a charge depending on the volume of the item.

Large Item Delivery

Unfortunately, due to costs imposed on us from our courier, some large items will have a surcharge applied to them. This charge will appear in your cart when you checkout.

International Delivery

Please note certain large and fragile products are excluded from international delivery.

CountryOrder WeightDelivery Price
Belgium, Austria, Germany, Luxembourg, Netherlands0 - 30kg£11.99
Czech Republic, France, Hungary, Italy, Monaco, Slovakia, Slovenia0 - 30kg£14.99
Croatia, Denmark, Finland, France-Corsica, Italy-San Marino, Liechtenstein, Poland, Portugal, Sweden, Switzerland0 - 30kg£17.99
All International30kg+£1.30 per kg

How quickly will my order arrive?

Our aim is to dispatch all items within the allocated dispatch times (Same day/24 hour/48 hour dispatch). Please note if your order contains multiple items, the order dispatch time will be from the item with the longest dispatch time to ensure you receive your whole order in a single delivery. All of our products state how long the dispatch time will be for that product before you add to the cart. All orders are sent using a next working day delivery service. You should receive your item from 1 - 2 working days after dispatch. Bulky items may incur an extra 24hr delay.

We will send you a notification email when your order has been dispatched.

While we always try our best to dispatch every order following the above guidelines, during extremely busy periods dispatch times may increase by up to one day. We will keep you updated on the status of your order via email.

Delivery notifications & tracking

We will email you when your order is dispatched by us and if you provide a mobile number when you checkout our courier will email you on the day of delivery with a delivery slot.

In your dispatch confirmation email we will include any relevant tracking numbers.

Manage your delivery

We have teamed up with DHL to provide our customers with the best delivery service possible which is both fast and flexible.

If we miss you on the first delivery attempt, we will try again the next working day. Alternatively, you can visit DHL and easily re-arrange your delivery to something which suits you better! You can choose from the following options:

  • Collect from depot
  • Leave in a safe place
  • Leave with a neighbour
  • Request a different delivery day

Free delivery for local postcodes

If you live within five miles of any of our Plymouth shops you can get FREE delivery on orders over £20. The delivery cost will automatically be removed as soon as you enter your shipping address during the checkout. Click here to see full addresses.

Please click here to find out more about delivery and returns.


Here at The Pet Express we want you to enjoy every time you shop with us. Occasionally we know you may want to return items, we have tried to make our terms as clear as possible to avoid any nasty surprises.

  • Products can be returned up to 14 days from date of delivery for a full refund or exchange.
  • Any free gifts must be returned with your order or we withhold the right to deduct the RRP value of the free gift from your refund.
  • We are unable to accept part used returns of food, engraved ID tags, damaged products (unless delivered damaged) or veterinary medicines.
  • You are responsible for the cost of returning the product back to us, unless they arrive damaged, faulty or the incorrect item is delivered.
  • The product must be in its original packaging, unopened and in a re-saleable condition and the cost of collection or return will remain at your charge. 
  • We only accept returns for products that have been purchased through us.
  • Medicines: We regret that we cannot, by law, accept returns of any medication including all flea treatments and wormers. If you return a medicine to us all we can do is dispose of it for you as it cannot be resold.

Please see our full returns policy for more information.

Customer Reviews

Excellent in all respects

As stated above the whole process from ordering to delivery was extremely easy and delivery was prompt and efficient, would use again.