Therm-a-Rest NeoAir Trekker Mattress Large

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Based on the incredibly successful NeoAir mattress, the Therm-a-Rest NeoAir Trekker mattress brings even more comfort and durability to a proven equation for lightweight and compact mattress design. ThermaRest’s Triangular Core Matrix technology maintains its promise of twice the warmth of other uninsulated air mattresses along with the unique stability that only NeoAir technology can offer. All of this comfort is encased in a durable yet supple fabric that adds versatility to a long list of reasons why people will be looking for this mattress.


  • Superior Stability: Patent-pending Triangular Core Matrix construction creates over 100 internal cells that equalize air distribution for unmatched stability.
  • Efficient Warmth: Internal cells trap heat and slow convective heat loss without the unnecessary weight or bulk of synthetic or down fill.
  • Compact and Light: Manual inflation, advanced materials, and fiberless insulation assure the lightest and most compact mattress possible.
  • Lasting Performance: Rugged, 100-denier polyester bottom and soft, 75-denier top assure maximum versatility with the durability and comfort to handle a wide range of uses.


  • R-value of 2
  • One-pound, ten-ounce weight
  • Measures 25-by-2.5-by-77 inches (W x H x D)
  • 4,813-cubic-inch volume

Lifetime Warranty:

Therm-A-Rest products include a limited lifetime warranty against defects in materials and workmanship.

About Therm-A-Rest:

Three decades after inventing the self-inflating mattress, Therm-a-Rest remains the most trusted name in outdoor comfort. The company makes every mattress in its facilities in the U.S. and Ireland, using only the most reliable, innovative materials available. In addition, Therm-a-Rest puts them through rigorous lab and field-testing to ensure that they perform well in every situation. That’s why the company backs all of its products with a lifetime warranty honored worldwide. With one office in Seattle, Washington, and a second in Middleton, County Cork, Ireland, the company says with confidence that “beneath every great trip lies a Therm-a-Rest.”

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