Product details:

The NeoAir XTherm provides the greatest warmth-to-weight ratio of any four-season self-inflating sleeping mat. With a 6.3 cm thickness, an R-Value of 5.7, and a soft, textured no-slip fabric, the Neo Air XTherm will provide the best level of comfort and insulation of any sleeping mattress on the market. It still packs down small to save space in your pack.