Therm-a-Rest BaseCamp Sleeping Pad
The Therm-a-Rest BaseCamp sleeping pad is our go-to solution for car camping, road trips, and base camp comfort. This self-inflating foam pad combines the convenience of automatic inflation with the plush support you need after long days on the trail or exploring new territory.
We designed the BaseCamp for campers who prioritize comfort without sacrificing packability. The open-cell foam core expands when you open the valve, drawing air in automatically—just give it a few extra breaths to reach your preferred firmness. The durable 75D polyester shell stands up to rough ground, gravel campsites, and tent floors season after season.
Whether you're setting up at a drive-in campsite or establishing a multi-day base for hiking and fishing trips, the BaseCamp delivers the cushioning and insulation you expect from a trusted sleeping pad.
What makes the BaseCamp stand out
Construction and materials that last
We build the BaseCamp with a 75-denier polyester shell that balances durability with weight. The fabric resists tears and abrasion better than lighter materials, making it ideal for rugged campsites where rocks, roots, and gravel are part of the terrain.
Inside, the open-cell polyurethane foam core does the heavy lifting. When you unroll the pad and open the valve, the foam expands and pulls air into the chambers—no pump needed for initial inflation. The foam also provides consistent support across the entire surface, eliminating the pressure points that can wake you up on a thin air mattress.
Sizing and fit for different sleepers
The BaseCamp comes in two sizes to match your height and sleeping style. The Regular measures 72 inches long and 20 inches wide, fitting most adults up to six feet tall comfortably. If you’re taller, prefer extra room to shift positions, or want more surface area for cold-weather insulation, the Large extends to 77 inches long and 25 inches wide.
Both sizes are 2.5 inches thick when fully inflated, giving you enough cushioning to sleep on your side without bottoming out on hard ground. The rectangular shape maximizes usable surface area compared to tapered or mummy-cut pads, so you won’t feel confined if you move around at night.
Insulation performance across three seasons
The BaseCamp earns an R-value of 5.0, which translates to reliable insulation for spring, summer, and fall camping. That rating means the pad provides enough thermal resistance to keep you comfortable on cold nights down to around 20°F when paired with an appropriate sleeping bag.
The foam core traps dead air space, creating a barrier between your body and the cold ground. Unlike inflatable air pads that can lose warmth if the air temperature drops, the BaseCamp maintains consistent insulation throughout the night. The thickness also keeps you elevated above damp or frozen soil, preventing moisture from wicking heat away from your sleeping bag.
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Common questions about the BaseCamp sleeping pad
The BaseCamp typically expands to about 80 percent of full thickness in 60 to 90 seconds after you open the valve. You'll want to add five to ten breaths to reach maximum firmness and comfort. The exact time depends on temperature—warmer air speeds up the foam expansion slightly.
The BaseCamp is designed for car camping and base camp use where weight and packed size are less critical. At 3 to 4.5 pounds depending on size, it's heavier than pads built specifically for backpacking. If you're carrying it on your back for miles, consider our lighter self-inflating or air pad models instead.
The BaseCamp has an R-value of 5.0, which provides insulation suitable for three-season camping down to approximately 20°F when paired with an appropriate sleeping bag. For winter camping or temperatures below 20°F, layer the BaseCamp with a closed-cell foam pad underneath to increase total insulation.
Each BaseCamp includes a repair kit with adhesive patches. Clean the punctured area with rubbing alcohol, let it dry completely, then apply the patch over the hole and press firmly for 30 seconds. Allow the adhesive to cure for at least two hours before re-inflating the pad. For larger tears, contact our warranty service for replacement options.
The Regular measures 72 inches long and 20 inches wide, fitting sleepers up to six feet tall. The Large is 77 inches long and 25 inches wide, offering extra room for taller campers or those who prefer more space. Both sizes are 2.5 inches thick when inflated. The Large weighs about 1.5 pounds more than the Regular.
Yes, you can leave the BaseCamp inflated throughout a multi-day trip. The brass valve seals tightly to prevent air loss, and the foam core maintains firmness even if you leave it set up for a week or more. Just keep it inside your tent or under a tarp to protect it from UV exposure and sharp objects.
Store the BaseCamp unrolled or loosely rolled with the valve open in a cool, dry place. Avoid leaving it compressed in the stuff sack for months at a time, as long-term compression can reduce the foam's ability to expand fully. A closet shelf or under-bed storage works well for keeping it ready for your next adventure.