When unforeseen squalls send cooling wind and rain your way Sitka Gear 's Nimbus Jacket has your back. Simple light and highly packable the Nimbus WINDSTOPPER(r) Active Shell is completely windproof and water resistant. Stored easily in the smallest of packs or in the glovebox of your truck the Nimbus is the perfect jacket to block windchill and light moisture in unpredicatable conditions.