Ultra Premium High Performance Clean Burning (no odor) Made in U.K. Greenhouse Premium Butane is ultra-refined and clean-burning. Indispensable to keep your lighter refilled. With a 140ml size. Ultra Premium High Performance Clean Burning (no odor) Made in U.K. Greenhouse Premium Butane is ultra-refined and clean-burning. Indispensable to keep your lighter refilled. With a 140ml size.