【Brand New, High-Quality】 kassai. Copper Sierra Cup Titanium Handle 350ml & 500ml 13,000 yen (tax included) This high-performance sierra cup features a copper body with high thermal conductivity and a titanium handle with low thermal conductivity. * Thermal conductivity is far higher than stainless steel or aluminum. The biggest feature is that cooking is less likely to burn and heat is evenly distributed. I think it's perfect as a gift or a reward for yourself. I don't have many opportunities to go camping, so I'm selling it at a low price.