Silk PJs? Who is she? It's a slinky little sleep upgrade you will not regret. These silk pajamas work for every season: a side slit for hot sleepers that want a bit of leg ventilation, made from 100% mulberry silk that's washable for low-maintenance luxe. Plus, silk fiber contains 18 kinds of amino acids that make it amazing for skin nourishment, hypo-allergenic, and naturally thermoregulating to help maintain body temperature.