Semi Truck Sleeper Mattress Toppers, Cut to Your Bunk

Common sleeper bunk sizes by truck

Most OTR sleepers use one of four mattress footprints: 32 x 80 (upper bunks and some mid-roof cabs), 36 x 80, 38 or 39 x 80, and 42 x 80. Freightliner Cascadia bunks are typically 36 or 42 wide depending on the sleeper package. Kenworth W900 and W990 run 42 wide. Peterbilt 579 is usually 36, the 567 is 42. Volvo VNL 760 and 740 bunks are about 39 x 80. International LT 56-inch sleepers run 36 x 80 and their 73-inch sleepers use a 32 x 80 upper. Mack Anthem and Pinnacle are usually 36 x 80.

Those are starting points, not gospel. Sleeper packages change year to year, and plenty of drivers have swapped a mattress already. The only measurement that counts is the one you take with a tape on your own bunk. The table below lists the sizes we see most often. None of them are stock home sizes, which is why a sleeper topper is a custom cut for us; it takes 1 to 2 business days to quote and there is no charge for an odd size.

How to measure a sleeper bunk

Pull the bedding and measure the mattress, not the bunk frame. Take the width at the head and the foot and the length down both sides; sleeper mattresses are often cut a half inch or so under the frame. Note any clipped corner where the mattress meets a cabinet or the fridge, and give us the two legs of that cut (for example, 6 inches along the side and 8 inches along the foot). We cut straight angled corners; we do not cut curved radius corners.

Then measure height. From the top of the bare mattress to the underside of the upper bunk, the cabinet, or the roof. Subtract an inch for bedding and you have your maximum topper thickness. Many lower bunks have 30-plus inches and can take a 4 inch topper; upper bunks and mid-roof cabs are often under 24 inches and do better with 2 inches.

Last, check whether the bunk lifts to reach storage underneath. A 42 x 80 topper at 3 inches weighs roughly 12 lb, which is manageable, but a tight cover with straps makes the lift-and-flip easier.

Memory foam or latex for a truck bunk

A sleeper bunk is where a driver spends more nights than at home, on a mattress that is usually 4 to 7 inches of firm foam over a plywood or plastic pan. Two things fix that: pressure relief and heat control. Idling with the bunk heater or APU running, the sleeper can be warm and stuffy, and a cheap closed-cell topper turns into a hot water bottle.

Gel memory foam is the pick if your shoulders and hips ache after a 10-hour drive followed by an 8-hour sleep. It is open-cell and gel-infused, so it moves heat rather than storing it, and 3 inches over a firm OEM mattress is the most common driver request. Talalay latex (2 or 3 inch, 24 ILD soft or 28 ILD medium) is bouncier, sleeps a bit cooler, and holds its shape through years of bouncing down I-80. It is the better choice if you sleep hot or hate the slow-sink feel. Either one can be cut to your bunk with a cover or without.

Factory direct, shipped to the yard or the house

We pour, cut and package our own foam in Phoenix and sell straight to you, so there is no middleman markup and a custom 39 x 80 is quoted on the foam it takes, not on how unusual the size is. All memory foam is CertiPUR-US certified, fiberglass free and hypoallergenic, made without fire-retardant sprays and aired out in the Arizona sun so it does not stink up a closed cab. Latex is natural Talalay, Oeko-Tex certified.

Toppers ship compressed by FedEx Ground, free in the lower 48. We can ship to your home, your terminal, or a FedEx pickup location on your route. Let it decompress 24 to 48 hours before judging it. Every topper has a 30-Night Happiness Guarantee with free returns and a 5-year warranty. Questions about a fit? Call (800) 556-1333 and talk to someone who has cut a few hundred of these.