The winning model at ISPO 2025! The Robens Lightcore 3.1 is warm enough for three-season use and packs down into a very small space. The eight-centimeter thick pad provides excellent sleeping comfort. With a sleeping pad made of such light fabrics, it's wise to be especially careful about your campsite: clean the ground of sharp objects and consider using a lightweight foam pad under the air pad. - Regular size: 183 x 53 x 8 cm - Includes a pump bag for filling - Lowest use temperature by manufacturer: -4°C - Efficient Peak Valve When inflating such a mattress, it is always a good idea to use a pump, either the base's own pump bag or a separate electric pump. Inflating by blowing introduces moisture into the base, which over time can cause mold problems and even failure of the base's internal adhesives.