Callahan X REVOLVE Cardigan Set in Green. - size XS (also in S,M,L) Callahan X REVOLVE Cardigan Set in Green. - size XS (also in S,M,L) 60% cotton 40% poly. Hand wash cold. Front button closure. Top: Adjustable shoulder straps. Cable knit fabric. Item sold as a set. Imported. CAHN-WK109. RC208. 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.