THE MOST VERSATILE LAYER IN YOUR CLOSET Our 89% Merino wool blend is antimicrobial, quick drying, and insulating, and 11% Nylon blend helps the merino wool retain its shape and be more abrasion-resistant. The natural antimicrobial property of Merino wool keeps the stink away even when there&';s not a washing machine for miles around. The other key benefit of Merino wool is it&';s fast-drying, and as we know all too well, dry equals warm. Add to that its breathability when things warm up, and what you have is the most versatile hoodie in your closet.