The stich through construction keeps the weight down and make sure the down filling is kept in place the filling is the finest european goose down on the market and the very soft and downproof fabric makes the passion one extremely comfortable full length zipper makes getting in and out easy while despite its light weight yeti managed to include a hood with it too the outer rip stop nylon fabric at a remarkable 25gsqm is not only tearproof but owns good wind and water resistant propert