The Everyday Invisible Sock in Black from Feetures.

With anatomical design and Targeted Compression, experience an unbeatable Custom-Like Fit. Paired with silicone Heel Hugger technology, these socks give stay-up confidence in low-rise shoes. Forget stiff shoes and enjoy all-day comfort with these perfect Loafer socks.

• Targeted compression provides zone-specific compression where you need it most for superior fit and support
  
• Anatomical design conforms to left and right structure of the foot providing enhanced fit and reduced risk of blisters
  
• iWick fibers wick moisture to keep feet cool and dry
  
• Our thinnest option provides a lighter, cooler feel
  
• Heel Hugger technology - a band of high quality, self-fusing silicone tape keeps sock from slipping inside shoe
  
• Now made with yarn made from recycled plastic.
  
• 60% Polyester; 33% Nylon; 7% Spandex.