FRESH WITHOUT BREAKING A SWEAT Our 89% Merino wool blend is antimicrobial, quick drying, and insulating, while the 12% Nylon helps the fabric retain its shape and be more abrasion resistant. Merino wool is naturally breathable, so you won&&';;t be sweating through this polo like you did all your others whether you&&';;re at the office or rucking off the beaten path. The natural antimicrobial property of Merino wool means that when sweating can&&';;t be helped, the stink doesn&&';;t penetrate into the fabric. Wear it all day and it&&';;s still fresh when happy hour rolls around.