Nike Sock Dart Men's Shoe SOCK-LIKE FIT. LOCKED-DOWN FEEL. The Men's Nike Sock Dart Shoe takes a minimalist approach to an ultra-comfortable style. Its engineered knit upper stretches to deliver a sock-like fit, while its adjustable midfoot strap provides a locked-down feel. Engineered knit upper is flexible and breathable. Molded midfoot strap has an adjustable closure for a personalized fit. Phylon foam midsole offers cushioned comfort.