Yellowstone trail lite classic 300 sleeping bag description the trail lite classic 300 sleeping bag is pretty fantastic if you ask us a great 3 season sleeping bag from yellowstone especially if you are after extra warmth and space this will keep you cosy and dry thanks to its water repellent fabric shell which means its your absolute camping essential when its forecast to rain for your whole camping weekend features ridge hood with extra 50gm baffle around hood zip guard t