GRLFRND Penelope Sweater in Blue. - size S (also in XXS) GRLFRND Penelope Sweater in Blue. - size S (also in XXS) 40% poly 20% acrylic 20% nylon 20% yak wool. Dry clean only. Knit fabric. Balloon sleeves. Imported. GRLR-WK7. GRK17 F19. True to the iconic Supermodels of the 90s, GRLFRND denim pushes the limits of basics to a new level of cool. Inspired by the Cindy's and Naomi's of the world, the line is sleek with an edge and always concerned with a flawless fit.