Callahan Vivi Wrap Top in Cream. - size XS (also in S) Callahan Vivi Wrap Top in Cream. - size XS (also in S) 45% viscose 25% poly 20% nylon 5% acrylic 4% angora 1% wool. Hand wash cold. Surplice bodice. Lightweight knit fabric. Imported. CAHN-WS17. 72014. 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.