A supportive fit and high-performance flex zones give Darn Tough’s Run No Show Tab Ultra-Lightweight Men’s Sock a strikingly comfortable profile that makes every mile effortless. Woven from a blend of synthetic and merino wool fibers, this running-specific layer balances the moisture-wicking, quick-drying, and odor-resistant properties of wool with the comfort and value of synthetic. It’s lightweight, fresh, and exceptionally performance-driven, with a zero-bulk, zero-itch finish that feels like a second skin. A cushioned heel tab adds extra protection behind the heel while arch support alleviates foot fatigue on long distance missions. It never bunches, slips, or blisters, and it remains mostly hidden under your footwear. It’s the lightweight, barely-there layer that packs a serious performance punch.