Copper Hybrid Firm EurotopCopper Hybrid Firm Eurotop is engineered for consistency and freshness, using copper infused materials and carefully layered support systems to encourage cooler and cleaner rest. The top layer features a NatuVerex Copper Infused Cooling Cover that encourages airflow and resists microbial buildup. Beneath, performance foams reduce pressure and promote comfort while keeping motion to a minimum. Made in the USA with expert craftsmanship, this mattress