From the berghaus mtnhaus laboratory comes the mens extrem 8000 pro gore tex jacket a highly technical shell that is prepared to take on the most active and arduous pursuits developed for reliable comfortable and breathable waterproof performance the extrem 8000 pro uses a combination of gore tex pro 40d and 70d to completely seal out the elements with a combined hydrostatic head of 28000mm without sacrificing breathabilitythe jacket anticipates high exertion and strenuous adventures wi