Features: Crafted from premium polyester, these maternity thermal socks feature extra thick insulation and over knee coverage to lock in warmth while protecting knees and legs from winter chill. The stretchy over knee design with skin friendly fabric to leg curves, offering gentle compressions to alleviate pregnancy related swelling without restricting movement. Ideal for expectant mothers in their second/third trimesters seeking comfortable leg support during prolonged sitting, or nighttime sleep. Perfect for lounging at home, working in temperature controlled offices, or staying cozy during winter sleeping with enhanced joint protections. Machine washable pregnancy support hosiery maintains shape through repeated washes, combining polyester construction with care for busy moms to be. Specifications: Component: Polyester Length: about 50cm/19.69in Color: 5 color optional Package Includes: 1 Pair Long Stockings note: Please allow 1-2cm errors due to manual measurement. Due to difference between different monitors, the picture may not reflect the item actual color.