J.Crew Cocoon Sweater Blazer color: Hthr Mushroom Somewhere between a jacket and a cardigan, this easy style is perfect for days that feel somewhere between seasons. With all the polish of your favorite blazer, and crafted from supersoft wool with just a hint of stretch, it's a top contender for most-worn layer. Acrylic/merino wool/polyamide/alpaca/elastane. Dry clean. Import. Relaxed over-sized fit. Body length: 29". Sleeve length: 30 1/2". Hits at upper thigh.