Bed linen encompasses the various textiles spread across a mattress for hygiene, warmth, and sensory comfort. This essential category includes **fitted sheets**, **flat sheets**, **pillowcases**, and **duvet covers**, typically crafted from breathable natural fibers like long-staple cotton or linen, or durable synthetic blends. Beyond their functional role in protecting the bedding and regulating body temperature, high-quality linens define the aesthetic of a bedroom through their weave—such as the crispness of **percale** or the silky sheen of **sateen**—and their thread count, ultimately transforming a bed into a personalized sanctuary for rest.