★★★ Silk is one of the best material for underwear,this women's silk long underwear is made of pure natural knit mulberry silk,soft,lightweigh and smoothly,silk is very friendly to your skin,good breathability and moisturizing, and is beneficial for skin health，silk long johns for women will be integrated with you,just like your second skin, keep you healthy and warm,great to be wear alone at home ,or be wear add an extra silk base layer (silk leggings)of warmth under your clothes in cold weather,or as a thermal long johns for sleep.give you a comfortable experience. it's one of yiour best care.