Blue Jay Brand Closed Toe Graduated Compression Aids Blood Circulation Clinically Proven To Improve Blood Flow Helps Prevent Tired Aching Legs And Swollen Ankles Especially On Airline Flights Fiber Content: Nylon (93%) Spandex (7%) Soft Lightweight Knit Two-way Stretch Design Provides Extra Comfort Reciprocated Heel/comfort Toe Soft Comfortable Welt Without Restriction Superior Stay Up Performance Color: Black Hcpc Code: N/a