Our Performance Polo's Merino is soft, breathable, wicks sweat, dries instantly, and is naturally thermoregulating and anti-microbial. Proudly handmade in the U.S.A. The only truly made in U.S.A shirt in golf. 100% jersey Merino fabric, natural horn buttons, 100% Merino ribbed cuffs. Sharp and reinforced collar design. Standard fit -- not slim, not oversized. Wears comfortably up to 90º. Light-weight fabric. 3.5oz / yard. Knit from RWS-certified Merino sheep, ethically raised in California, Colorado, Idaho, and Nevada. Orders ship via UPS within 24 hours.