From Feetures:

Our High Performance no show socks are superior to conventional socks because of their seamless toe, moisture wicking fibers and snug fit. 

Product Details

• Power bands of Lycra hug your entire foot for maximum support. This snug, supportive fit eliminates movement to prevent blisters.
  
• Our thinnest cushion option provides a lighter, cooler feel.
  
• iWick® fibers wick moisture to keep feet cool and dry, while providing superior durability.
  
• Mesh construction on top of the sock provides ventilation for added breathability.
  
• The Perfect Toe®. (No irritating toe seam.)
  
• No Show Tab height sits below the ankle for maximum versatility.
  
• Made in the USA
• 65% Polyester 32% Nylon 3% Spandex. Machine wash cold. Tumble dry low. No bleach or fabric softeners. For best results, wash socks inside out.