The golden child has long been 100 percent cotton. “A great performer in warm and cold temperatures, it’s easy to wash and soft to the touch,” says Karin Sun, CEO and founder of the online luxury-bedding company Crane & Canopy. Cotton sheets are commonly found in either a percale or a sateen weave. Sateen, which has a subtle sheen and a silky, smooth surface, can be a tad warmer than percale, which feels similar to a crisp men’s shirt. Though jersey sheets are often 100 percent cotton, they may be worth rethinking: “Due to its stretch, jersey tends to bunch throughout the night,” warns Sun. Outside of cotton, linen is a great choice for those who want a lived-in look, and polyester is gaining in popularity.