downwool hybrid insulation

DownWool® HYBRID – The extra warm insulation for arctic temperatures

Unlike DownWool insulation, the DownWool Hybrid construction is not a mix of materials. DownWool Hybrid insulation uses down and wool separately in different chambers.

This unique construction is used in the Grüezi bag® winter and expedition sleeping bags, which are designed for comfortable temperatures well below freezing.

Only 100% goose down is used in the chambers closest to the body. A layer of alpine wool is placed over these chambers, thus encasing the excellently insulating down in a layer of alpine wool.

The great advantage of this construction is that the moisture that builds up in the sleeping bag does not condense and freeze on the outer material as usual, but is absorbed by the alpine wool and released into the cold ambient air.

The result is an excellent and unique insulation in which the down remains dry and fluffy, so that it retains its excellent insulating effect even at extremely low temperatures well below 59 °F.