100% Merino Wool - Knitted in Vietnam, Merino is nature"s most technical, high-performance fibre. Its complex structure makes it remarkably soft against your skin, helps regulate your body temperature, and stays looking great wear after wear. * Thermoregulation Properties - The Merino wool fabric helps to regulate body temperature, due to its natural moisture-management and thermoregulation properties. The regulation of body temperature also helps to lower heart rate and prevent the production of lactic acid which leads to cramps, as blood can flow more freely as the body begins to cool. * Interior Flatlock Seams - Provides additional comfort and helps to prevent the risk of chafing. * Sculpted Side Panels - Reduces chafing and provides a body-enhancing, slim fit for extra comfort. * Drop Tail Bottom Hem - Gives you increased coverage and allows easier tuckability when needed.