Feetures Elite Ultra Light No Show Tab Socks Socks Night Sky : Feel your sock and foot become one when you try on Feetures Elite Ultra Lightweight socks. With a lean, lightweight construction and a technically advanced Sock-Lock(TM) support system, these socks fit so well, its almost as if theyre not even there. No show design. Cushioned tab protects your Achilles tendon and also helps keep the sock in place. Anatomical right and left foot design enhances fit, delivering maximum comfort and protection by helping to eliminate blisters. The Perfect ToeA(R) gives you a no irritation toe seam. iWickA(R) fibers wick moisture to keep feet dry and odor-free. The Power Arch (Patent Pending) is anatomically constructed to provide targeted support where its needed most. Thin flat knit construction takes up minimal room in the shoe. Y-heel construction provides an optimal fit and prevents socks from sliding into the shoe. Size indicator on each sock for easier identification and matching.