Sometimes less is more: the Womens Ultralight Insulated Air Sleeping Mat saves weight with its pared-down shoulder girth and shorter length compared to the unisex model. And sometimes more is more: it adds extra Thermolite insulation to provide tested three-season warmth for women backpackers. The womens specific sleeping mat shape is narrower at the shoulders, but wider between the hips and the knees. This guarantees greater comfort no matter what position you may sleep in, and perfectly matches Sea to Summits Womens Sleeping Bags. The uprated 30D / 40D face fabric is quiet and durable, and the lamination technology continues Sea to Summits class-leading reliability.