Callahan X REVOLVE Cardigan in Pink. - size S (also in L, M) Callahan X REVOLVE Cardigan in Pink. - size S (also in L, M) 90% cotton 10% elastane. Hand wash cold. Partial front button closure. Ponte knit fabric. Item is not sold as a set. Imported. CAHN-WK102. RC204. Los Angeles based brand Callahan is known for their comfy sweaters and perfect boyfriend fits. Their line is elevated by unique textures, materials, and techniques that give each piece versatility and wearability. Designed for cool girls everywhere, Callahan is inspired by effortlessly easy style.