Sea to Summit Pursuit Plus Mat

The Pursuit Plus SI Mat has an ASTM-tested R-Value of 4.2. This rating makes it a solid choice for three-season use, providing enough insulation to keep you comfortable during chilly spring and autumn nights.

It is a true self-inflating mat, meaning the open-cell foam core expands to draw in air once you open the valve. While it will do most of the work for you, you may want to add a few breaths of air at the end to reach your preferred firmness.

The horizontal Delta Coring removes foam to save weight without sacrificing support. Because the mat is 3 inches thick, you still get a plush, stable surface that prevents you from bottoming out on uneven ground.

Yes, it uses a 20-denier ultralight fabric that is designed to balance weight savings with durability. While it is tough enough for most backcountry use, it is always wise to clear your campsite of sharp sticks or rocks before laying it down.

The mat comes with a dedicated repair kit included. It is a straightforward fix, so we recommend keeping the kit in your pack whenever you head out.

At 28.4 ounces, it is designed more for comfort-oriented trekking than strict ultralight pursuits. If your priority is a restful night's sleep over shaving every possible gram, the extra weight is a worthwhile trade-off.