Joseph Ribkoff Midnight Blue/Vanilla Placement Stripe Sweater Knit Culotte. Crafted from a lightweight sweater knit blend, these pull-on culottes exude coastal expressions with their nautical-esque stripes and easy-breezy movement. A wide elastic waistband ensures perfect comfort for strolls down the boardwalk. Fabric Composition: 80% Viscose Rayon & 20% Nylon.