01Truck Mattress Guide: Sizes, Materials & What to Look For

A truck cab is both your office and your bedroom. If you're a long-haul driver spending nights in the sleeper, your mattress matters more than most people realize — bad sleep behind the wheel has real consequences.

This guide covers everything you need to know about choosing the right truck mattress: standard sizes, materials, thickness tradeoffs, and how to get a custom fit if your cab is non-standard.

02Standard Truck Mattress Dimensions

Semi-truck sleeper berths vary by manufacturer and model, but most fall within a common range:

Width Length Notes
35" 79"–80" Narrow single-sleeper berths, older models
38" 79"–80" Most common width in standard berths
42" 79"–80" Mid-size wide berths (Peterbilt, Kenworth, Freightliner)
48"–53" 80" Larger cab-over and luxury sleeper configurations

Always measure your specific cab before ordering. Dimensions vary even within the same truck brand depending on year and trim. Measure both width and length, and note any angled corners, walls, or wheel well intrusions that require a cutout.

03Material Options Compared

The material you choose affects how the mattress performs on the road — temperature, support, and durability all differ by type.

Material Feel Pros Cons
Memory Foam Contouring, pressure-relieving Excellent body support, quiet, no springs to break Can sleep warm, heavier weight
High-Density Foam Firm, supportive Durable, affordable, holds shape well Less pressure relief than memory foam
Gel Memory Foam Contouring with cooling Better temperature regulation than standard memory foam Slightly higher cost
Innerspring Responsive, bouncy Good airflow, familiar feel Motion transfer, spring wear over time, harder to cut to custom shapes
Latex Firm, responsive, natural Very durable, breathable, resistant to sagging Heavier, more expensive

Best overall for truck use: Gel memory foam or high-density foam. Both cut cleanly to custom shapes, hold up to the vibration of the road, and perform well without a traditional bed frame underneath.

04Thickness Considerations

Headroom in a sleeper berth is limited. Before choosing a mattress thickness, measure the clearance from the bunk platform to the ceiling (or upper bunk if applicable).

  • 4–6 inches: Budget-friendly, works in tight spaces. Less comfort for extended sleep.
  • 6–8 inches: The sweet spot for most truck sleepers — enough comfort for long rest without sacrificing headroom.
  • 8–10 inches: Maximum comfort, good for larger cabs. Verify you have clearance before ordering.

Foam mattresses achieve full support with less thickness than innerspring — so if headroom is tight, a 6-inch gel memory foam will outperform a 6-inch innerspring on comfort.

05Securing Your Mattress

A loose mattress in a moving truck is both uncomfortable and unsafe. A few options:

  • Non-slip mat: Inexpensive grippy mat between mattress and bunk platform. Works well for flat, level surfaces.
  • Mattress straps or bungees: Hook to anchor points in the bunk frame. Effective for cabs that corner aggressively.
  • Custom-fit frame insert: Some aftermarket truck accessories include a foam or wood insert that creates a snug channel for the mattress. Ideal for oddly shaped berths.
  • Fitted sheet tension: A tight fitted sheet can help hold a well-fitted mattress in place on smooth roads — but don't rely on this alone.

The goal is zero movement during driving. Even slight sliding will wake you up when the truck hits a bump.

06Custom Truck Mattress Sizes

If your cab has an unusual layout — angled corners, a wheel well cutout, or non-standard dimensions — a custom-cut mattress is the right solution. Foam mattresses cut cleanly and can be shaped to fit almost any berth configuration.

We offer custom sizing for truck and RV mattresses — any width, length, height, or corner cut. Contact us for a quote and we'll match the dimensions to your exact cab specs.

07Frequently Asked Questions

What size mattress fits a semi-truck?

Most semi-truck sleeper berths use mattresses in the 35"–42" wide by 79"–80" long range. The most common single-berth width is 38". Always measure your specific cab — dimensions vary by truck brand, model, and year.

Can I use a regular mattress in a truck?

Usually not. Standard mattress sizes (twin, full) are wider and longer than most truck berths. A standard twin (38" x 75") is close but often still doesn't fit correctly. Custom-cut foam mattresses are the better solution.

What thickness mattress is best for a truck sleeper?

6–8 inches works well for most drivers. It balances comfort with space constraints. Measure the vertical clearance in your berth before choosing — subtract a few inches for bedding.

Is memory foam good for truck beds?

Yes. Memory foam is a popular choice for truck sleepers because it doesn't have springs that can degrade from vibration, cuts to custom shapes easily, and provides good pressure relief for drivers who spend long hours sitting.

How long does a truck mattress last?

A quality high-density or memory foam truck mattress typically lasts 5–8 years with regular use. Durability depends on foam density — higher density foam (3+ lb/ft³) holds up significantly better than budget options.

Where can I get a custom truck mattress?

We offer custom-cut mattresses to fit any truck cab dimensions. Reach out with your measurements and we'll build the right fit. We can also cut corner angles and wheel well notches to fit complex berth shapes.