Questions, answered

We size by vehicle. Standard (54 in): for cars, SUVs and mid-size trucks. Wide (57.4 in): for full-size crew cabs — measure first. Standard is too small for full-size truck benches. Measure your back seat door to door at cushion height; the fit finder on the product page walks you through it. If you're under about 50 in, over about 60 in, between sizes, or just unsure, email support@biglugco.com with your make, model and year and we'll check before you order.

Some vehicles have airbags built into the outer edges of the rear seat backs. Look for an "SRS Airbag" or "Airbag" tag sewn into the seat, or check your owner's manual. If your rear seats have them, don't use this extender. Anything strapped over those seams can get in the way of the airbag. Not sure? Email us before ordering. If you find out after it arrives, the 30-day fit guarantee covers a full refund, and you don't need to send it back.

It's made for a bench back seat. With two separate chairs and a gap between them, the board isn't supported in the middle, so we don't recommend it.

No tools needed. Loop the straps around the headrests, lay it flat over the footwell, then buckle and tighten. Setup takes a few minutes — see the setup guide.

It's made for big dogs to stretch out on, with a rigid board under the cover (honeycomb on Standard, plywood on Wide). We don't publish a weight rating. Pick your size by vehicle, tighten the headrest straps and make sure the front edge rests against the front seat backs. For travel, clip your dog's harness to a seat-belt tether.

No. It's a comfort and seat-protection product. For travel, clip your dog's harness to a seat-belt tether.

The top layer is heavy 600D Oxford fabric, and the side flaps cover the lower door panels. No fabric is claw-proof, though. Long nails will wear any cover over time, so keeping them trimmed helps. If a seam or zipper fails under normal use, contact us.

Most mud, drool and hair wipes off the waterproof top with a damp cloth. The cover is removable for washing; follow the care label.

Not while it's in. It turns the whole back seat into one deck for your dog. Take any child seat out first. When you need the seats back, unclip it and fold it away.

Free US shipping, tracked. It arrives within 12 days of your order, door to door (calendar days, weekends included). The product page and cart show the exact dates for your order. You'll get tracking by email when it ships.

Free US shipping. Ships to the contiguous US; no AK, HI, PR, APO/FPO or PO boxes.

Use the tracking link in your shipping email, or enter your order number on our Track order page. Tracking can take 1–2 days to show movement.

Not always. The free gifts ship separately and usually arrive before the extender, and each parcel gets its own tracking email. Your extender may arrive in the manufacturer's carton.

Our 30-day fit guarantee covers it. Within 30 days of delivery, email us a photo of it in your back seat with your make, model and year. We'll ship the other size free, or refund you in full, and you don't need to send it back. One fit claim per order. Full terms are in the returns policy. Arrived damaged or wrong? Send a photo within 7 days of delivery and we'll replace it or refund you in full, with no return needed.

Yes. If the board or a hook fails in normal use within 12 months of delivery, email us a photo and your order number and we'll send a replacement, with no need to send the broken one back. In the first 30 days, any failed board, hook, buckle, strap or seam is covered by our returns policy. Full terms: 12-month limited warranty.

We don't offer change-of-mind returns on the extender. What we do cover: if it doesn't fit your back seat, you get the other size or your money back, and you keep the first one. If it arrives damaged or faulty, we replace it or refund you in full. Either way, you never need to send anything back.

Email support@biglugco.com as soon as possible. If your order hasn't been processed for shipping yet, we'll cancel it and refund you in full, or update the address. Orders are processed quickly, so we can't guarantee a change once that has started.

Every extender order gets one set of free gifts: collapsible travel bowls (2-pack, worth $6.99), a pet-hair glove (worth $3.99) and the Road Trip Ready guide (PDF). The bowls and glove are added to your cart at $0 and come off automatically if you remove the extender. They ship separately and usually arrive first. The guide's download link is in your order confirmation email.

Major credit and debit cards, Shop Pay, Apple Pay, Google Pay and PayPal, through Shopify's secure checkout.

Email support@biglugco.com. A person replies within 1 business day (Mon–Fri). For fit help, include your vehicle's make, model and year. For an order, include your order number.