A1009-Full Support Opaque Thigh High Stay-up Stocking Thermofabric is perfect for cooler weather. It provides some warmth outdoors, but is not too hot indoors like thermal underwear can be. This style is intended to replace men's socks; it is opaque at the ankles and can easily pass for dress socks. This style of male stockings provides the same graduated compression as our Styles 869 and 879 men's tights, effectively massaging and energizing your legs all day. The fabric of these men's thigh highs is soft and luxurious microfiber, providing superb comfort and excellent durability. Disclaimer: these are full support, but not medical support legwear. Contains 80% nylon microfiber and 20% Lycra spandex. Two sizes: M/L and XL. The M/L size is for inseams up to approximately 32 inches (81 cm). The XL size is for inseams from about 30 inches (76 cm) to 36 inches (91 cm). Of course, thigh diameter is a factor, so order a larger or smaller size accordingly. These numbers are merely guidelines. Available in black, dark brown, navy, tan and white.