- SHIPPING ONLY TO CONTINENTAL U.S. - Works only with Defi Extreme Dupont Lighters for high altitude! - Not for other Dupont Lighters - Works with other Butane Cigar Lighters - Highest Purified Butane on the Market - 75ml. Each - SHIPPING ONLY TO CONTINENTAL U.S. - Works only with Defi Extreme Dupont Lighters for high altitude! - Not for other Dupont Lighters - Works with other Butane Cigar Lighters - Highest Purified Butane on the Market - 75ml. Each