Autumn Cashmere Crew Long Sleeve Sweater in Brown. - size M (also in L) Autumn Cashmere Crew Long Sleeve Sweater in Brown. - size M (also in L) 100% pure cashmere. Dry clean only. Knit fabric. Bell sleeves. Rib knit trim. AUTU-WK637. RT10624. Autumn Cashmere is a fresh, contemporary and innovative knitwear company, creating cashmere, cashmere blend and cotton sweaters and accessories that excite the senses and inspire fun living. Fan favorites include Kate Hudson, Blake Lively, and Taylor Swift.