Premium Waterproof Dog Bed Liner

Premium Waterproof Dog Bed Liner

5 star rating 24 Reviews

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An Ingenious Idea

  • PROTECT YOUR INVESTMENT - You spend a lot of money on those dog beds! Start protecting them with a 4Knines Dog Bed Liner. Our waterproof liner is designed to protect the interior of your dog's bed from accidents and other wet messes.   
  • PROTECT YOUR DOG’S HEALTH – Use this liner to help protect your dog’s foam insert from household allergens, dust mites, mold, mildew, and that wonderful “wet dog” smell.
  • DURABLE & WASHABLE - The soft quiet fabric ensures you do not hear the bed every time your dog moves around on his bed. Machine washable; hang to dry.
  • EASY TO USE – Simply remove your dog bed’s stylish outer cover, place the bed’s insert into the 4Knines waterproof liner, and then replace the bed’s outer cover. 
  • SIZE OPTIONS - Available in four sizes. Medium (27 x 36"), Large (45 x 36"), XL (54 x 36"), and Round (45"). All are six inches deep. Measure your dog's bed to determine proper fit. 
  • USA STAFF & 2-YEAR WARRANTY – Your 4Knines dog bed liner is protected by a no-hassle 100% Customer Satisfaction Guarantee and a 2-Year Warranty (defects in materials or workmanship). Our exceptional US-based team is happy to answer your questions and manage any warranty concerns.
  • SAVE YOURSELF THE GUESSING GAME - Buy the best products the first time! "4Knines - Nothing But The Best For Your Best Friend"

    *LINER ONLY - Dog bed not included*

    4Knines is committed to giving back to the animal community. We donate a percentage of each sale to animal advocacy groups.


    Feature Design

    Easy to clean

    Shake it out, wipe it down, vacuum or machine wash.

    Easy to install

    Installs in just 40 seconds!

    Made to last

    Heavy duty, waterproof and non-slip features.


    Our products are made with premium fabrics that ensure a quiet ride.


    Repels water to keep your cover dry and clean.

    90 day risk free trial

    Try our seat cover. If you are not 100% satisfied, return it within 90 days.

    We've got you covered!



    Messy kids


    Committed to quality

    Our improvements come from our customers

    Not your average car cover

    We are pet owners, so we understand how tough a pet can be on your car and your car cover. That is why we are constantly improving our products based on customer feedback.

    Protect your car

    We protect your car seats from:

    — Dirty Dogs

    — Food

    — Drinks

    — Water

    An Ingenious Idea

    Product Video

    Frequently asked questions

    01 Which Size Dog Bed Liner Is Best For My Dog Bed?

    4Knines® Dog Bed Liners are available in a variety of sizes. Please measure your dog’s bed to determine the best fit.

    Medium: 27” long x 36” wide x 6” deep

    Large: 36” long x 45” wide x 6” deep

    X Large: 36” long x 54” wide x 6” deep (this is very large - please measure!)

    Round: 36" diameter x 6" deep

    02 Are 4Knines® Dog Bed Liners Really Waterproof?

    Yes! 4Knines® Dog Bed Liners are made from the same material used to cover baby cloth diapers. It is a soft and very quiet material.

    03 Are 4Knines® Dog Bed Liners Available In A Variety Of Colors?

    4Knines® Dog Bed Liners are currently available in a neutral, tan material. If you are interested in other colors, please shoot us an email and let us know. We are always developing new products!

    04 Are 4Knines® Dog Bed Liners Machine Washable?

    Yes! Please wash your liner in cold or warm water and hang to air dry.

    05 What Is Covered By The Two Year Warranty?

    The 4Knines® Dog Bed Liner Warranty covers the liner for the 2 full years as long as it has not been discontinued and was purchased from the owner of the 4Knines® brand. Proof of purchase or order number is required. The warranty covers manufacturing defects, defective materials, irregular wear, or breakdown of the material. 4Knines® strives to provide superior customer service. If you have any problems with your product, please contact us and we will do whatever we can to make it right. (subject to change)

    06 Please Explain The 4Knines® 100% Satisfaction Guarantee.

    We stand behind our products 100%. If your 4Knines® product does not work for your vehicle for any reason, you may return it for a full refund within 30 days of purchase. No hassle. No explanation needed.

    Our customers love a clean car


    Shera S. Verified buyer

    Awesome product!

    Very easy to install. Only used once so far, but very high quality and seems like it will be great at protecting my seat!

    Kinsey R. Verified buyer


    I was weary about the products at first (I bought a backseat cover as well), but when they arrived they were fantastic quality. Looks classy, super easy to install, and my dog loves it. We live in the Sunshine State. The material is breathable, and doesn't get too heated. Definitely the best product out there. Luckily, Pinterest came through for me in discovering these amazing covers.

    Marcia C. Verified buyer

    Split rear seat cover

    Super easy to install. Hammock still allows us to see our dog easily. Drinking water and dribbles no problem. Just puddles up and does not penetrate. Website and communication top notch!!

    Russell P. Verified buyer

    Bed liner

    My older dog put them to good use and the bedding stayed dry and just to wash covers. Great product and the dog line sleeping on the beds again. Plastic protected the bedding but but dog did not like the feeling.

    Patricia C. Verified buyer

    Outstanding seat cover

    We all love it. Easy to install, Great protection. Fabulous materials.

    Maria C. Verified buyer

    Split rear seat cover

    Super easy to install. Hammock still allows us to see our dog easily. Drinking water and dribbles no problem. Just puddles up and does not penetrate. Website and communication top notch!!

    Janice L. Verified buyer

    Great Product

    It stays pretty much in place and I have 2 German Shepherds that jump into the back of my SUV! It looks well made and I am very happy so far.

    Kristen W. Verified buyer

    Great Product

    Everything fit perfectly, wish the sides can up further and could Velcro onto the side of the truck or suction onto the windows.