Skip to product information
1 of 8

MegaMat Auto

MegaMat Auto

Regular price $399.95
Regular price Sale price $399.95
Sale Out of stock
Shipping calculated at checkout.
  • This product is carbon offset with myclimate.

In stock






-40 °F


76 in

Top Width

52 in

Bottom Width

39 in


4 in


136 oz

Packed Dimensions

27.6 x 11.8 in

Pump Style

Self inflation/Mini Pump


Sleeping mat, SideWinder stuff sack, Mini Pump, repair kit




50 D stretch tricot polyester, OEKO-TEX® 100 certified dyeing, TPU film laminate, DWR free


75 D polyester, OEKO-TEX® 100 certified, TPU film laminate, DWR free


16 kg/m³ open-cell PU foam, OEKO-TEX® 100 tested


PFC free product label EXPED myclimate logo

Climate Contribution

EXPED calculates all climate emissions from the production and transportation of this product and finances certified climate protection projects through myclimate to an equal extent.

Learn more at >


OEKO-TEX® Certified Material

This product features OEKO-TEX® STANDARD 100 materials or dyes. See MATERIALS tab for details.

Learn more at >



This product is free of per- and poly-fluorinated compounds, a group of non-degradable, man-made chemicals commonly used as dirt and water repellants.


Shipping & Returns

Orders are shipped from our warehouse Monday through Friday (except holidays) within 2 business days. ships to addresses in the United States, APO/FPO and U.S. Territories only. If shipping to a military or U.S. Territory address, please select USPS Priority Mail at checkout. 

Orders shipping via UPS Ground will arrive in 8-10 days, UPS 2-Day in 4-6 days, and UPS Next Day Air in 2-3 days. USPS shipments may take 8-10 days for delivery. These shipping rates include order processing time.

Orders are eligible for return within 60 days.

If you do not receive your package in the above time period, please contact us at with your Order Number. 

View full details

Product Description

MegaMat Auto is the ultimate vehicle sleeping mat fitting many mid-size trucks, compact SUVs & wagons, and Tesla models.

Like other sleeping mats in the MegaMat product line, the MegaMat Auto features 4 inches of open-cell polyurethane foam for support and warmth and a brushed, stretch tricot nylon surface for cradling comfort.

The open-cell foam is self-inflating, meaning that when the inflate valve is opened, the foam expands and draws air into the mat. An EXPED Mini Pump is included to top-off the inflation and achieve the preferred firmness. 

New for 2024: Our updated MegaMat Auto now features two inflate and two deflate valves for even faster setup and take down.

  • 3-D construction

    Vertical sidewalls ensure the biggest possible sleeping surface — just like your bed at home!

  • Self-inflating mat

    Open the one-way inflate valve & insert the valve pin to speed up inflation. Mini pump included to top off up air to your desired firmness.

  • 2 extra large deflate valves

    Updated MegaMat Auto now features 2 deflate FlatValves for even faster deflation.

  • Luxurious surface material

    The soft & stretchy tricot polyester face fabric ensures maximum next-to-skin comfort and enhances the cradling effect for a truly luxurious sleep experience.

  • Wheel well cutouts

    Asymmetrical sleeping mat shape fits between the wheel wells of many vehicles. Turn your vehicle into a trailhead hotel.

  • Repair kit & stuff sack included

    Patch small punctures & tears with our included mat repair kit. The rolltop SideWinder stuff sack is height adjustable, perfect for the quick "messy roll."

1 of 6


What is R-value?

R-value is a measure of thermal resistance. It indicates the efficiency of insulation by measuring its resistance to heat transfer. The higher the number, the slower the rate of heat transfer through an insulation.

In EXPED sleeping mats, higher R-values help sleepers retain the heat their bodies generate and the result is the pleasant and sometimes elusive condition called warmth!

Can I use an electric pump to inflate my mat or pillow?

You can use the EXPED Widget electric pump to inflate your mat. The Widget is relatively low power and can be used for all EXPED mats and pillows. We do not recommend the use of any electric pumps other than the Widget because overinflating your mat or pillow can cause irreparable damage.

What do I do if my MegaMat isn't inflating on its own?

When our mats are stored in a compressed state for prolonged periods, the interior foam gets used to its compressed (rolled-up) shape and can cause sluggish self-inflation of the mat.

We also like to point out (since many overlook it) that the mats come with an “inflation wedge” (looks like a zipper pull) piece next to the inflate valve. This is designed to be inserted between the plastic valve wall and the green silicone “flapper” seal to create an adequate gap for air to enter the mat. If your mat’s foam seems compressed, filling the pad to full inflation (until the mat is firm) and leaving it inflated for a few hours should be enough to de-compress the memory foam and restore the mat's self-inflating ability for subsequent uses.

How do I clean my mat?

The first step is to make sure all valves are fully closed. We recommend cleaning your mat with warm water and a mild soap. Do not use bleach to clean your mat. If needed, you can use a rag or soft sponge to carefully scrub the mat.

After using soap, rinse it well. The mat should air dry after cleaning. Do not put your mat in a washing machine or dryer.

How should I store my mat?

Store your mat in a cool, dry place, unrolled with the valves open and out of reach of pets with claws.

Rooftop Tents:

It’s fine to use and store the mat in a rooftop tent while on
a trip, but in warmer climates, we recommend leaving the valve caps open during
the daytime as a precaution so that the mat cannot overinflate from the heat of
sun exposure.

In general, it's good to keep the mat somewhere cool and dark to
minimize damage from excessive heat or UV radiation. It’s also best not to keep
your mat in a rooftop tent year round for long-term storage. 

In-House Gear Repair Services

Our goal is to keep gear out of the landfill by doing repairs whenever possible. Learn more about how to submit a warranty or repair claim.

Learn More