The vaude ice peak 1000 down sleeping bag is an outstanding sleeping bag for extreme cold conditions with 1000g of 9010 grey duck down as its filling the ice peak 1000 is incredibly warm yet packs down small enough to take with you wherever you roam vaude have created this sleeping bag in the classic mummy design minimising the internal air spaces and consequently maximising on the down s insulation the tapered shape also reduces the amount of material required making the ice peak 1000 as light