Therm-A-Rest RidgeRest This model has an aluminum coating on the surface. I purchased it around October 2020, but I bought another mat soon after, so this one is unused, although I did open it. It was stored rolled up, so there are marks from the bands, but I don't think it will affect the usability. Actual size: 50cm x 174cm Sleeping mat Mountaineering Tent camping Camping