Silica gel in the top band. Pull-on closure. Hand wash only. These maternity compression stockings are made of premium 1280D grade microfiber material, breathable and durable compression fabric composed of 77% nylon and 23% spandex. Features true graduated compression of 20–30 mmHg. Anti-fatigue, sweat-absorbent, anti-slip, breathable, and eco-friendly. The socks may feel tight when first worn; this is normal. By improving blood flow and circulation, maternity compression socks may help reduce ankle, leg, and foot swelling commonly associated with pregnancy. Thigh-high compression stockings help reduce muscle cramping and re-energize tired legs, making them suitable for individuals who stand or maintain a seated or standing posture for extended periods. They may also help reduce the risk of developing varicose veins. For optimal performance, it is recommended to have two pairs for rotation, which can extend the life of each pair. Best practice is to wash every two days, not exceeding three days of continuous wear, as prolonged use may affect the elasticity recovery of the socks. Guaranteed to maintain effective compression and durability through dozens of washes. Refer to the size chart in the product images for proper fit.