What Our Gearhead(R) Experts Are Saying: "This is the mat I grab when comfort matters most. The three-inch thickness feels fantastic, and the Delta Core foam keeps weight manageable without losing warmth. It's warm, durable, and super easy to use-just roll it out, let it inflate, and dial in the firmness. Perfect for year-round camping." We rely on the Sea to Summit Camp Plus Self-Inflating Mat when we want year-round comfort that doesn't cut corners. With a plush three-inch profile and a plus-size shape, it creates a warm, supportive foundation that turns any campsite into a place we look forward to settling into. The Delta Core technology-Sea to Summit's signature foam-removal process-shaves bulk while preserving the durability and cushioning we count on through every season. A 4. 3 R-value makes the Camp Plus a trustworthy choice for cold-weather outings, keeping the chill of the ground at bay even when temperatures dip. Easy self-inflation and a compact packed size mean setup and breakdown stay simple, letting us focus more on unwinding and less on fussing with gear. For campers who want dependable warmth and true off-grid comfort, this mat delivers night after night.