|Duofold Mens Varitherm Mid Weight Long Sleeve Thermal Top Tall - Black KMC7 fiber content is 96% Polyester / 4% Spandex Jersey. Duofold Mens Varitherm Mid Weight Long Sleeve Thermal Top Tall - Black Features: Single-layer thermal for warmth in cold weather. Flatlock seams to avoid irritation. Top: Drop tail for protection against the cold. Bottom: Drawcord for custom fit. Odor resistant, Moisture Control, 360 Degree Stretch. previously the . Duofold Mens KMC7 comes with 1 Thermal Tops per Pack.