4 oz ISO Butane Gas. Camping is one of the best ways to truly experience the greatoutdoors so get connected with Mother Nature by spending time outdoors. Whether you are an experienced camper who enjoys long back country hikes or you just want to try something new in the great outdoors then just go for this. Our camping accessories are lightweight, compact, durable and most importantly useful during your trip. Features 4 oz ISO Butane Gas; A premium blend of isobutane fuel; Specifications Capacity: 4 oz; Weight: 0.49 lbs; .