Diono Ultra Mat Full-Size Seat Protector, Black

Diono Ultra Mat Full-Size Seat Protector, Black

The Diono Ultra Mat completely protects your car upholstery against scratches and dents from a child safety seat, whether it is rear-facing or forward-facing with partitioned pads of high-density foam. With top and bottom grip surfaces to prevent car seat slip and the handy front organizer pocket, it really is the ultimate undermat. Waterproof, washable fabric is easy to care for. Works with infant carriers, car seats and boosters. Latch compatible.

Main features

  • Full coverage: High density foam panels cover both seat bottom and seat back to protect from indentations and scratches
  • Double layer tear resistant fabric prevents wear and tear
  • Organizer pockets for convenient storage
  • Top and bottom grip surfaces keep mat securely in place
  • Easy to clean; Latch compatible

Verified reviews


Excellent coverage

These fit perfectly in the rear seat of our 07 Suburban under our Britax 70-G3. Covers the whole seat bottom. It won’t contain anything spilled, but none of them really do anyway. The full back of the seat is covered, so with our seat currently rear facing, it is perfect. Very pleased, and great value too. It does exactly what it is designed for.

Lana Rock Creek, MN

Good buy

Must have for protecting you car seat. I have a fabric interior, but it’s beige and my daughter is so messy. My seats were getting really worn from crumbs and juice spilling everywhere, the mat catches all of that and it also keeps indents out of my seats.

Marjorie Cerritos, CA

Protects seats without compromising safety

After taking out my car seat for cleaning, I realized how much damage was happening to my leather seats. I have been hesitant to put in a mat because I did not want to compromise safety. When I found this mat that has been crash tested and approved, I was ready to try it out. This mat was very easy to install. It fit really well in my Honda CR-V. Right now I’m using a Chicco Keyfit 30 right now. It took a while to get a good install because it was difficult to tighten down the base enough with this mat on.

Hope Center Point, TX

good but

arrived today and was eager to use this in place of towels under the car seat on the leather seat…so it goes on easy…it has a strap to go around the head rest…well made..but…the width..from side to side..is a little skimpy..it should be 3 inches wider…the length is perfect….don’t get me wrong the car seat does fit on it but just exactly ..I feel if the car seat shifts to the left or right one side of the car seat will in contact with the leather seat…

Alba Slemp, KY

saved out leather seat

Our previous carseat left a little dent on the leather seat.. after we switch the car seat and added this, it saved our leather seat!

Arline Honomu, HI


Fits great in my Chevy Malibu. I use this with my Graco Nautilus 3 in 1 harnessed booster, and no issues. Wish I would have gotten it sooner.

Allie Stuttgart, AR

Must have to protect your car seat

Must have–esp if you have leather seats. It’ll protect from most things, though with prolonged use, you’ll still get dirt/crumbs and junk migrating into the folds of the seat. Without it, clean up would be infinitely harder.

Erma Forest Hill, MD

good protection

Excellent product to have with convertible car seat. It well protect the seat of your car and your baby will enjoy riding without any problem.

Deann Austinville, VA

Works great!

We have two of these for our leather seats. Highly recommend. Keeps entire seat protected. Very durable. Easy to clean.

Manuela Platte City, MO


Protects my leather seats from the damage that could be done by our carseats. Keeps my seats clean. No issues. Love the pockets for holding some of their toys.

Cortney Mc Naughton, WI

A real seat-saver

I installed this seat protector in my new GTI to protect the leather seating – and it is totally worth the investment. This protects the seat from both spills and permanent dents from the car seat base, as well as protecting the back of the seat from being scuffed by the kicking of little feet.

Patrica New Oxford, PA

Love this mat

This mat has been great so far, we are using it with the Britax Chaperone car seat. It does not have any residue that is left behind on the seat as some of the other mats similar to this product. It covers the whole back and bottom of the seat. Would definitely recommend.

Valarie Bakerton, WV

love diono !!!

this is an amazing product my daughter kicks it and no marks on my seats. love the bottom pockets also another plus

Florence Mangum, OK

Exceptionally Made and Functioning Seat Protector Mat

By far an excellent seat mat protector for our leather car minivan seats. Crumbs and sticky stuff embedded in the mat, not the seat! Mat is built very well and should hold up until the kids are 18! Ha-ha. I have purchased three of these mats and am super satisfied. Work as advertised and are holding up very well. I have the messiest kids alive!

Lora Blacklick, OH

Five Stars

like this item

Opal Wilton, MN

Does the job.

I purchased this to protect my leather seat in my new car from the car seat base when our son was born. It does the job and doesnt slide around. We havent had the use for the front pocket yet, as my son is still in the backwards facing seat, but I am sure we will find lots of uses for it.

Rosalia East Poland, ME