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Add to SafariWhen comparing Therm-a-Rest MondoKing 3D Camp Mattress vs Coleman Comfortsmart Deluxe Cot, the Slant community recommends Therm-a-Rest MondoKing 3D Camp Mattress for most people. In the question“What are the best mattresses or pads for camping?” Therm-a-Rest MondoKing 3D Camp Mattress is ranked 1st while Coleman Comfortsmart Deluxe Cot is ranked 3rd. The most important reason people chose Therm-a-Rest MondoKing 3D Camp Mattress is:
It's a great mattress to use when camping outdoors at any season, even during winter. You'll be well-insulated from the frozen ground because it has a high [R-value](https://en.wikipedia.org/wiki/R-value_(insulation) of 11.4. Other cheap camping mattresses only have an R-value of 4 or lower. An R-value level tells you the capacity of a material in protecting you from the cold. The higher it is, the better the protection.
Specs
Question Ranking
Pros
Pro Great for camping use even in cold weather
It's a great mattress to use when camping outdoors at any season, even during winter. You'll be well-insulated from the frozen ground because it has a high [R-value](https://en.wikipedia.org/wiki/R-value_(insulation) of 11.4. Other cheap camping mattresses only have an R-value of 4 or lower. An R-value level tells you the capacity of a material in protecting you from the cold. The higher it is, the better the protection.
Pro Comfortable to sleep on
You'll be able to sleep in comfort since it's 4 inches thick and has a plush foam core. This mattress will shield your body from sharp rocks or roots.
Pro Easy to inflate
It won't be difficult to prepare this mattress since it inflates on its own without a need for an air pump. Its valves will immediately suck in air once it's opened. If you want it to be more firm, all it needs is a few breaths through the valve.
Pro High off the ground
Since it's raised above the ground, there are fewer worries when it comes to crawling insects or slithering animals. Rocks or ground wetness is also not an issue.
Pro Can accommodate heavy and tall people
It can support weights of up to 300 pounds and is long enough for people up to 6 feet and 6 inches in height.
Pro Durable
The frame is made of heavy-duty metal.
Pro Comfortable
It has spring coil suspension, comes with its own mattress so you can move freely and it's comfortable enough to sleep on for a long period of time.
Cons
Con Challenging to deflate
Deflating this mattress requires a bit of an effort. You'll need to use your body weight to push all the air out before you can roll it up and fit it back to its bag.
Con Too bulky to carry
It only folds in half and measures 39.6 x 30.7 x 5.5 inches when folded, so carrying it for long distances or over rough terrain will be difficult. It's more suitable for campsites with vehicle access.
