J. Crew Rollneck Sweater in Supersoft Yarn Black Wool Alpca Blend Size Large Gently used condition A magical mixture of merino wool...alpaca and stretch makes this sweater supersoft (hence the name). More to love about it? The classic rollneck and easy fit. 56% polyamide/30% merino wool/10% alpaca/4% elastane. Hand wash. Measurement details in photos SB9