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Therm-a-Rest MondoKing 3D Sleeping Pad

Therm-a-Rest MondoKing 3D Sleeping Pad

From $229.95
Up to 12% off
  • Free shipping
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  • Returnable
Double XL
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Product details

The Therm-A-Rest MondoKing 3D Sleeping Pad is a high-quality pad for car camping or base camping. This is a self-inflating pad that has a 4" thickness when fully inflated. With an R-value of 8.0, this pad is suitable for year-round use, and soft stretch-knit fabric provides quiet comfort for the most restless sleeper.

Key Features:

  • Vertical Side Walls – The vertical side walls support maximum use of the sleeping surface.
  • TwinLock Valve System – The TwinLock valve system uses two, one-way valves; One for inflation and one for deflation, to quickly inflate or deflate the pad.
  • StrataCore – Exped's StrataCore construction provides a continuous layer of thermal foam between ridges to enhance its warmth-to-weight ratio.
Poseidon Blue
Sleeping pad type
Self-inflating pads
Age Group
Model year
Camping sleeping pad inclusion
Pump/Stuff Sack
Camping sleeping pad intended use
Open-cell Foam
Sleeping pad R value
Sleeping pad material
Polyester, Polyurethane
Sleeping pad shape
Sleeping pad thickness
4 in
Expert Q&A
Quick, accurate answers from Curated experts to the frequently asked questions
Where is therm a rest made?
Therm-a-Rest is a Seattle based company since 1972. They take great pride in keep their headquarters and manufacturing right where it all started between the Cascade Range and Puget Sound.
Camping & Hiking Expert Mary ACamping & Hiking Expert Elizabeth H.
by Mary A on July 11, 2022 · view 1 other answer
Therm-a-Rest MondoKing 3D Sleeping Pad
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Top reviews
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Amy B
Amy B
Verified camping & hiking expert
Reviewed Jul 13, 2022

Ultimate campsite comfort - this sleeping pad is 4.25 inches thick! It is well insulated with an R-value of 7 to keep you warm even when the ground is icy cold. This pad is self inflating and also includes a built in pump sack to perfect the firmness! The large size measures 77 x 25 inches.