Product information: Fabric name: Polyester Fiber Color: nude thin-short gray, nude thin-short black, nude thin-short white, nude thin-medium white, nude thin-medium gray, nude thin-medium black, bare thickening-short tube Black, bare thickening-short tube White, bare thickening-short tube Gray, bare thickening-Middle tube White, bare thickening-Middle tube Gray, bare thickening-Middle tube Black Length of socks: Middle calf Main fabric composition: Polyester Fiber (polyester) Size: free size Function: sweat absorption