Three hard boardsFull width. Not six loose panels.
600D oxford + TPUWaterproof layer, not a sprayed coating.
Ships from the USADelivered in 4–6 business days.
30-day fit guaranteeDoesn’t fit? We pay the return shipping.
Hard Bottom Dog Back Seat Extender
Standard / Black With Hard Bottom
€136,95
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⭐ ⭐ ⭐ ⭐ ⭐ 4.8/5 Based on 15,249 Users
1 Minute To One Flat Floor
Without cardboard inserts, six tilting panels, or a cover that comes up four inches short.
€136,95
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One level surface, seat back to front seats
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No floorboard gap for a back leg to drop into
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Three full-width boards — not six loose panels
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600D oxford over a TPU film, so mud and wet fur stay on top
Doesn't fit? Send it back. We pay the return shipping. 30 days, no restocking fee, no store credit.
Ships from the USA
Delivered in 4–6 business days.
30-day fit guarantee
If it doesn't fit, we pay the return shipping.
Any questions?
Email us at hello@blackfellco.com
Will it fit my truck?
Push your front seat all the way back, then measure from the front edge of your rear seat cushion to the back of the front seat.
23 inches or less and the deck reaches. More than that and it will leave a gap at the front — don't order, email us and we'll tell you straight.
Full-size pickups are where this whole category fails. Owners report covers landing four to eight inches short in Silverados, Tahoes and Ram Quad Cabs, with nothing in the listing to warn them. Send us your vehicle and year before you order.
Is the hard bottom actually cardboard?
No. Three reinforced boards over a six-layer base, under one continuous cover. Unzip the back and they come out in your hand.
Twelve different buyers in our research used the word "cardboard" without being asked — on $45 covers and on $130 ones. It's the most common lie in the category, which is why the boards are photographed outside the cover instead of described inside it.
Can someone still sit in the back?
Not on the side the deck covers. It's a flat platform, not a seat.
Seat belts still work — velcro openings let them through where they always came through. The market leader removed that access and told a customer the change was an "upgrade".
If you need the back bench for people, this is the wrong product.
Can my older dog still get in on his own?
One step instead of two.
A deck that fills the floorboard also covers the floor-level step a lot of dogs use to climb in. If yours goes floorboard first and then up onto the seat, that becomes a single step up.
For a young dog it's nothing. For a stiff eleven-year-old it's the thing to check before ordering — and for some of them the honest answer is a ramp as well as a deck.
Great quality and exactly what I was looking for. Everything works as expected.
Drag it. That's the whole product.
Your back seat slopes down, and then it stops. In front of it the floor drops away several inches. A big dog spends the whole drive bracing against that — front paws on the cushion, back legs hunting for something level.
Three rigid boards span from the seat back to the front seats at seat height. The drop is gone. Pull the handle across and you are looking at the same car, one minute apart.
How it works
Two jobs. Remove the drop, then stop the deck moving.
1
The boards remove the drop
A back seat slopes down, then stops. Between it and your front seats is the floorboard. Three rigid boards span that whole distance at seat height, so there is no drop left to fall into.
This is why a sling doesn’t solve the same problem. Fabric stretched across a hole is still a hole — a heavy dog sinks into the middle of it, or crawls under it to get back onto the seat.
2
The anchors and walls stop it moving
Straps to the headrests, anchors pressed into the seat crease, quilted walls along both doors. The deck stays where you put it instead of riding up on the third corner.
One reviewer named the absence of exactly this as the reason their cover slid: “there is no handle on the bottom rear of the hammock to tuck in between the seats… which causes the sliding.”
3,583
Reviews of dog back seat covers, read and sorted by what went wrong. Two complaints outnumbered everything else: it didn’t fit, and the dog slid.
What it’s made of
Every line below traces to a failure someone reported on a cover they already owned.
600D oxford shellThe same thread density used for luggage and tool bags.20 reviewers reported rips and seam failures on thinner covers
TPU film behind the fabricA waterproof layer, not a coating sprayed on top.6 reviewers reported “waterproof” covers that weren’t
Three reinforced boardsFull width, over a six-layer base. Not six loose pieces.The market leader went from three panels to six
Side-release buckle strapsHeavy-duty headrest straps, not thin elastic loops.11 reviewers named straps, buckles and clips as the failure point
Seat anchorsTuck between cushion and seat back to stop the deck sliding forward.Named by a reviewer as the exact part their cover lacked
Velcro belt openingsBoth rear seat belts come through where they always did.The market leader removed this and called it an upgrade
The boards come out in your hand
Unzip the back panel and the three reinforced boards slide out. That is the whole proof, and it is why they are photographed outside the cover rather than described inside it.
Twelve buyers in our research used the word “cardboard” without being asked — on $45 covers and on $130 ones.
Blackfell vs the market leader
Two of these rows are identical, and that’s the point.
| Blackfell | Market leader | |
|---|---|---|
| Hard bottom | Three full-width boards | Six loose panels |
| Seat-belt access | Velcro openings, both belts | Removed — a customer was told the change was an “upgrade” |
| Seat anchors | Yes | “no handle… which causes the sliding” |
| Shell | 600D oxford, TPU-backed | 600D oxford, TPU-backed |
| Waterproof | Yes | Yes |
| Fit measurement published | Fits up to 23 inches | Not published anywhere |
The fabric is the same. What differs is the base, the belt access, and whether anyone will tell you the measurement before you order.
It fits most cars
Sedans, crossovers and SUVs — anything with up to 23 inches between the back of your front seat and the front edge of your rear cushion. That is most of the road.
Full-size pickups are the usual exception. Not sure about yours? Send us your year, make and model and we will tell you straight, including when the answer is no.
And if it turns out not to fit, we pay the return shipping.
What owning it looks like
Not a promise. A sequence, so you know what to check and when.
The first drive
Fit it, then ten minutes of ordinary roads with turns and one hard stop. If it shifts, tighten the straps and re-seat the anchors.
The first week
Some dogs take a few trips to stop looking for the old floorboard. They settle once they work out the floor doesn’t end.
The first wash
Unzip the back, pull the boards and padding, gentle cycle, air dry, reassemble. Ten minutes.
The first year
Seams, zips and buckles fail first in this category, in that order. If any of them go, email us.
Comes out as fast as it went in
Unclip the four hooks, fold it along the three sections, strap it shut.
It goes flat in the trunk or stands on its edge in a closet. The boards
stay inside unless you take them out.
What owners said about the covers they already bought
These are not Blackfell reviews. They are from the research — the complaints this product was built to answer.
“no grip whatsoever for a dogs paws”
★★★ retail review“6 pieces… tips up a bit in the middle”
★★ retail review“they told me these changes were ‘upgrades’”
★★ retail reviewMeasure your car. If it fits, there's nothing else to decide.
Questions
If your question isn't answered here, email hello@blackfellco.com.
If your question isn't answered here, email hello@blackfellco.com.
How can I contact Blackfell Co?
Email hello@blackfellco.com. We usually reply within a day, Monday to Friday.
Will it fit my car?
It fits most cars, crossovers and SUVs — anything with up to 23 inches between the back of your front seat and the front edge of your rear cushion. Full-size pickups are the usual exception.
Not sure about yours? Email us your year, make and model and we'll tell you straight, including if the answer is no. And if it turns out not to fit, we pay the return shipping. More detail on the fit page.
Where do you ship, and where from?
We ship within the United States only, from a US warehouse. We don't currently take international orders.
When will my order be processed?
Orders placed Monday to Friday are dispatched within 1 business day. We don't dispatch on weekends or public holidays.
How long will it take to arrive?
Typically 3–5 business days from dispatch. Shipping is free on all US orders.
Will I be charged customs or import duties?
No. All orders ship domestically within the United States, so there are no customs charges or import duties.
What payment methods do you accept?
Visa, Mastercard, American Express, Maestro, PayPal, Apple Pay, Google Pay and Shop Pay.
Can I change or cancel my order?
Email us as soon as you can. If it hasn't been dispatched yet we'll change or cancel it, no problem. Once it's shipped we can't stop it — but the 30-day guarantee still covers you.
What's your return policy?
Thirty days, any reason. Email us and we'll sort it.
If it arrives damaged, faulty or wrong, we'll replace or refund it immediately — just send a photo. You won't need to ship anything back.
If it simply doesn't suit you — wrong fit for your car, or your dog won't settle on it — we'll refund you too. We may ask you to return it depending on the situation, and if we do, we'll cover the postage.
What if my order doesn't arrive?
Every order ships with tracking. If it hasn't turned up within 10 days of dispatch, email us and we'll either resend it or refund you in full.
When will I receive my refund?
Refunds go back to your original payment method. Card refunds usually appear within 5–10 business days, depending on your bank. If it's been longer than that, email us and we'll chase it up.
Is it really machine washable?
Yes. Unzip the back panel, slide out the three rigid boards and the foam, then wash the cover on a gentle cycle and hang it to dry. Slide the boards back in once dry. For everyday mess, a damp cloth handles it without removing anything.
Can I still use the seatbelts?
Yes. There are velcro openings on both sides for the belts to pass through, so you can clip a harnessed dog in or seat a passenger with the cover fitted.
Does it slide around?
No. The base is rubber-backed and non-slip, and it's held with headrest straps at both ends plus anchors that tuck into the seat crease. It's fitted, not draped.
What if my dog won't use it?
Most dogs take a journey or two to settle. Try feeding a treat on it in a stationary car first. If he genuinely won't settle on it, that's covered by the 30 days.