Therm-a-Rest Mondo King Sleeping Pad

This pad is designed exclusively for car camping or base camp setups. At 5.5 lbs and with a packed size of 31 inches, it is too heavy and bulky for backpacking, but it offers unmatched comfort for trips where you can drive right up to your campsite.

The pad uses a dual-valve TwinLock system that allows air to enter automatically when you open the valves. While it is self-inflating, you will likely want to add a few breaths or use a pump sack to reach your preferred firmness level.

An R-value of 7 indicates a very high level of insulation, making this pad suitable for four-season use, including cold winter camping. It effectively prevents the cold ground from sapping your body heat, keeping you warm even in freezing temperatures.

Yes, the pad features a mateable design specifically engineered to connect with other Therm-a-Rest 3D mattresses. This allows you to create a seamless, gap-free double bed if you are camping with a partner.

The vertical sidewalls create a box-like shape that maximizes the usable sleep surface, preventing the 'rolling off' sensation common with rounded-edge pads. This design essentially turns your sleeping pad into a true mattress, giving you edge-to-edge support.

The top surface uses a 50D stretch knit fabric that is soft to the touch but durable enough for standard camping use. However, because it is a plush, knit material, you should still use a ground sheet or tent footprint to protect the bottom from sharp rocks or debris.