Comfort Plus SI Sleeping Mat

With an R-value of 4.1, this mat provides solid insulation for three-season camping. It is designed to keep you warm during spring, summer, and autumn nights, though it may not be sufficient for extreme winter conditions.

The mat uses open-cell foam that expands when you open the valve, drawing air inside automatically. While it will inflate most of the way on its own, you may need to add a few breaths of air to reach your preferred firmness.

The PillowLock system is specifically designed to work with Sea to Summit pillows that feature the corresponding hook-and-loop patches. If you use a different brand of pillow, it will not secure to the mat using this system.

Yes, at 3.1 inches thick, this mat provides ample cushioning to prevent you from bottoming out on the ground. The Delta Core technology maintains structural support across the surface, which helps keep your hips and shoulders comfortable throughout the night.

When packed, the mat measures 13.4 inches long by 7.1 inches in diameter. Because it is a self-inflating pad with foam, it is bulkier than an air-only pad, making it best suited for car camping rather than long-distance backpacking.

The mat includes a repair kit, which allows you to patch small holes or tears in the field. The process is straightforward and ensures you can maintain the mat's integrity without needing to replace it.