The Premium Antimicrobial Duvet is constructed with a 100% cotton soft touch 300 thread count outer shell, that is filled with an anti-microbial micro-fresh fiber that has natural breathability, and provides proper air circulation leaving you with a cool uninterrupted sleep. However, this fill primarily guards against elements that cause bacterial growth, mildew, and dust allowing you, and your guests, to sleep easily knowing you won’t be disturbed by allergy sensitivities. This product is durable and capable of being machine washed - wash and dry on delicate to achieve your preferred level of freshness.