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
Fancy a free cat toy?
Kitty & Co Cat Teaser Ball With Catnip (Assorted)

Free gift when you spend over £25 on any cat products! Subject to change and availability.

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.


B Code:

Customer Reviews 4.9 5 4.9/5 Based on 23 reviews Show all reviews


Lovely addition to my cat kennel Reviewed by Gizmobexy on 28 Dec 2019

This liner fits beautifully in the outdoor cat kennel. I wish I had bought it ages ago. I’ve got a little outdoor cat who left his real house when they got a dog. He decided to sleep in my garden. I tried to bring him indoors but he won’t So now he sleeps in his kennel and I think he must be warmer with this liner. I love it and so does little Puss. ????


Clever liner Reviewed by Mervynwhitney on 13 Nov 2019

The inner liner looks just like the picture in the Ad. It is the same as the inner dimensions of the KatDen. it can be pushed into the Den through the small door and then flattened out on the sides and floor with a hand. It makes the CatDen interior more like home and should be good for the outdoor cat.


Excellent Reviewed by Sandrawelsh55 on 04 Oct 2019

Brilliant Sevice And cheapest liner around and good quality but definitely give this 100%


Mr Snugs den and Liner Reviewed by Julia_cleary on 03 Mar 2019

I have a feral cat living at the bottom of my garden. I purchased the cat den but felt I needed something to provide kitty with a warm sanctuary. She loves it and so do I! Thank you the liner did the trick.


Great product, the cat loves it. Reviewed by Lyndacherrett on 18 Sep 2018

The liner fits the KatDen perfectly and transforms the space into a cozy & warm snug for the cat. Easy to remove for cleaning with a separate mattress/cushion that can be brushed or washed as required.

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!*

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 Weight Delivery Service Delivery Price
0kg - 30kg DHL Next Day £5.99
30kg+ DHL Next Day £0.32p per kg

*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 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.

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

We will email you when your order is dispatched by us and our courier will email you on the day of delivery with a 1-hour delivery slot.

If you provide a mobile number when you checkout, our courier will also send an SMS message on the day of delivery with a 1-hour delivery slot.

Order Tracking

You will receive an email to confirm we have received your order and that your payment has been accepted. You will also receive an email when your order has been dispatched.

In your dispatch confirmation email we will include any relevant tracking numbers, allowing you to track your parcel on the DHL website

If you provide a mobile number when you checkout, our courier will send an SMS message on the day of delivery with a 1-hour delivery slot.

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, Paignton, Torquay or Exeter shops listed 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.