It is a three-season sleeping bag for versatile use. It has no competition among 1-kilogram sleeping bags – it is the absolute leader in this regard, especially among cycle enthusiasts, because of its low weight.  The filling is made of 2 x 120 g/m2 Insufil Thermo hollowfibre which provides a small volume and weight and also a great insulation. Outer material contains of 40D 240T Tactel RipStop Nylon with RipStop modification, inner material is made of Soft Nylon.