Silk production dates back far in human history and has long been regarded as a luxury fabric. It is a strong, durable material that is also lusciously soft and shiny. Silk is also very breathable, because it is a natural material, and generally maintains a cool temperature. This makes it a popular choice for hot sleepers. Additionally, silk can be beneficial for hair and skin, as it won’t absorb moisture or cause hair breakage like other materials, since it is so smooth.

With its smooth finish, incredible durability,  and resistance to pilling, Egyptian cotton is the highest quality cotton you can find. It’s typically made with an extra-long staple — the longest cotton fiber available — and can be fairly pricey for the real stuff.