Callahan Kathleen Fair Isle Pullover in Chocolate. - size XL (also in L, M, S, XS) Callahan Kathleen Fair Isle Pullover in Chocolate. - size XL (also in L, M, S, XS) 70% recycled polyester 30% polyester. Machine wash. Pull-on styling. Ribbed trim. Wrap around geometric design. Heavyweight knit fabric. CAHN-WK172. The Kathleen Fair Isle Pullover. 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.