Womens Pure Mulberry Silk Knitted High Neck T Shirt Undershirt Long Mulberry Silk Bow Tie V Neck Shirt Womens Mulberry Silk Blend Shirt Knitted Round Neck Undershirt Long Polo Ralph Lauren Mulberry Silk Shirt. Mulberry Silk Mulberry silk, known as the queen of fibers, is a natural protein fiber celebrated for its silky softness, radiant luster, and superb breathability. Like a second skin, it provides a cool, spa like sensation and luxurious comfort all day. Care Wash dark and light colors separately Hand wash, do not bleach, do not tumble dry, line dry in the shade, cool iron, do not dry clean