Size D semi truck mattresses were specifically designed with upper bunk areas in mind and measure 32” wide by 80” long.
The size D truck mattress measures 32” wide by 80” long, making it the most narrow SleepDog® truck mattress size. Exclusively available in the BigDawg Mattress™model, it measures 9” tall.
International LT Series
The 73” sleeper cab upper bunk is the perfect size for a size D BigDawg mattress™ upgrade.
Mack Anthem
Available in 3 different configurations that can be customized with single or double bunks
*Please note: When looking for a replacement mattress it is important to know the exact measurements of your sleeping area. While most sleeper cabins accommodate standard semi-truck mattress sizes, the best and most accurate way to measure for your new mattress is to measure the width and length of your sleeper berth.
Try your size D semi-truck mattress risk-free for 120 nights. If you don't love your new SleepDog® truck mattress after sleeping on it for 60 nights, let us know and we will get the return process started. Details can be found in our Return Policy.
All of the memory foam we develop for our truck and RV mattresses is CertiPUR-US® certified and DOT approved. This means that the foam in each semi truck mattress has been tested by accredited labs and has been certified as safe to sleep on, as well as appropriate for road travel. We use multiple layers of our house-made memory foam to provide the perfect balance of support and pressure relief for all sleepers.
We partner with Affirm to offer flexible financing options, so you can pay with fixed monthly payments with rates between 0-30% APR. Simply select Affirm at checkout and complete an application that won’t affect your credit score. Prequalify Now.
The BigDawg® features a 9” plush multilayer memory foam and quilted foam cover construction, making it a double-sided mattress that can be flipped for either a soft or firm feel.
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Size D semi-truck mattresses were designed with semi-truck bunks in mind, measuring 32 inches wide by 80 inches long.
No. While the Size D SleepDog® truck mattress was designed with small sleeper cabin bunk spaces in mind, they can be used in any sleeper birth that will appropriately accommodate a 32” by 80” semi-truck mattress.
Size D SleepDog® mattresses are DOT approved and designed with multiple layers of CertiPUR-US® certified memory foam to give truck drivers a safe and supportive place to sleep. The mattresses are built to minimize motion transfer and provide pressure relief for all body types while withstanding the rigors of life over-the-road.
Yes. SleepDog® provides a risk-free 120-night sleep trial for all truck mattresses and RV mattresses. If you’re not satisfied with your Size C truck mattress after sleeping on it for 60 nights, you may begin the return process. See the Return Policy for further information.
SleepDog® Size D truck mattresses were engineered to provide optimal comfort and support in small sleeper cab bunk spaces. All of the memory foam used in our truck mattresses is American-made, CertiPUR-US® certified and DOT approved for high quality, durable sleep.