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.