Acrylic Yarn With Antimicrobial Spandex Stay Up Rib Cuff Logo Embroidery On Cuff Snug Fit Heel Arch Support Rib Knit Compression Ankle Rib Band Toe And Heel Cushion Reinforced Ghost Seam Toe Box Fit: ASI FIT Weight: MIDWEIGHT Fabric: 83% ACRYLIC / 15% NYLON / 2% SPANDEX S/M = US 5 - 8.5 L/XL = US 9 - 13