Therm-a-Rest MondoKing 3D Sleeping Pad

We’ve read the reviews across the web for the Therm-a-Rest MondoKing 3D Sleeping Pad and summarize the results below:

Universal Ranking

PeakScore: 87 (out of 100)
User Rating: 4.3 stars 
Expert Rating: 4.5 stars

Number of Ratings Reviewed: 410

Pros & Cons

Reasons to buy:

User Reviews

  • Stays fully inflated during a full night of sleep.
  • Provides a comfortable and padded surface for a comfortable night’s sleep.
  • The higher R-value rating keeps you insulated from the ground during cold weather.

Expert Reviews

  • Warm and comfortable for all-night use.
  • Can be easily adjusted to the ideal firmness for your needs.
  • The pad has a wave-like structure to the surface which provides comfort and the ability to easily roll over.
  • The soft polyester is comfortable and soft to lay on.
  • The outer material remains breathable during warm-season use for comfort.
  • Thick and warm for ample comfort during cold conditions.
  • The comfortable foam core and high R-value makes this a good pad for 4-season camping.
  • The fabric is soft to the touch, but still remains resistant to abrasions and remains durable.
  • Works very well for car camping and 4-season use due to the warmth-to-weight ratio.
  • The dual valves let you easily adjust the softness of the mat to your personal preference.
  • The 50D face fabric is durable and abrasion-resistant to tough debris.

Reasons NOT to buy:

User Reviews

  • Takes a little bit of time to inflate, which limits the ease of use.
  • Some reports of the seam splitting after minimal use, limiting the durability.
  • The packed size is very big and limits the ease of transportation.

Expert Reviews

  • Large packed size, making it more tedious and difficult to carry.
  • Expensive compared to other options on the market.
  • Not as easy to inflate as other similar pads.
  • Not the best value for a top-rated mattress, since an REI option is cheaper and provides the same capabilities.
  • The larger size makes this not the best choice for backpacking.


The Therm-a-Rest MondoKing 3D Sleeping Pad is a four-season, durable, and comfortable pad for all-night use. If you frequently go car camping and weekend camping, this could be a great choice for those who want an abrasion-resistant, highly-padded, and very warm pad for all-year use.


Note: User and expert rankings were reviewed across the web. Some expert reviews include these: 1, 2, 3, 4, 5, 6, 7, 8.