Thermarest Prolite Apex R Red

The Thermarest Prolite Apex delivers reliable comfort for backcountry adventures. This self-inflating sleeping pad combines open-cell foam with a streamlined design that expands automatically when you open the valve. With a 3.8 R-value rating, the insulation handles three-season use and keeps you warm on cool nights. The pad shows few signs of wear—no scuffs, loose threads, or discoloration. Mummy shape, 20 x 72 inches. As a bonus, specialized sealant has been applied to the base, creating an enhanced airtight seal, reducing air loss and extending pad life. Lightweight and packable, it pairs proven durability with practical warmth for campers and backpackers seeking dependable rest in the field.