Material: Belly: 78.7% Nylon, 21.3% Elastane Socks: 79.3% Nylon, 20.7% Elastane Compression pantyhose for both casual and formal wear, graduated compression at 15-20mmHg. Massages and energizes tired, achy legs and helps prevent and treat: fatigue, pain, stiffness, soreness, swelling, cramps, shin splints, varicose veins, lymphedema, phlebitis, DVT (deep vein thrombosis), blood clots and plantar fasciitis. Comfortable for all day, everyday use. Premium stay up top leaves no marks. Ideal thickness to fit any shoe. Discreet and stylish design for walking, sitting, standing, travel and all attire from casual to work, dress or formal. Long lasting and machine washable materials and construction using our micro-scaled compressive knit patterning.