Silk is your beauty sleep's secret weapon. It keeps your skin soft and coiffure intact. Choose from 6 colors available here: ivory, pink, mint, French blue, white, and pale grey.  Boudoir cases (12 x 16) have a flange on 4 sides; standard cases (21 x 31) and king cases (21 x 41) have a knife edge.  Made in USA.  Pillows sold separately.