Specialised synthetic fibre technology. The fibres form a structure with hollow channels, providing down-like insulation. The result is insulation with excellent insulating properties, but also extremely lightweight and moisture-wicking.

This ultralight nylon windproof fabric has a specific weight of 40g/m? and the fibres are as fine as silk. At the same time, the fabric is reinforced with ripstop. The fibres of the Pertex® fabric are so densely woven that fine feathers of insulation cannot pass through them. Pertex® fabric is windproof and waterproof.