Snow Peak GigaPower Fuel 250g - Case of 12 This high quality fuel, with "made in Japan" safety is a mixture of IsoButane and Propane Rated to work at temperatures above 15 degrees Fahrenheit Fuel Mixture: 15% Propane / 85% Iso-Butane Mixture Dimensions: D 4" H 3.5" each Weight: 7.8oz (250g) each