The Washable Silk Tank Set features our thermoregulating fabric with a low back and a delicate silk band to prevent shoulder straps from slipping. In addition, this set features a no slip grip waistband to prevent shorts from riding up at night. About Lunya: Considered restwear that feels as good in bed as it looks, Lunya's innovative fabrics and functional silhouettes are designed to make you rest-ready anytime. NWT