Women's Nike Sock Dart BR Shoe SOCK-LIKE FIT. LOCKED-DOWN FEEL. Women's Nike Sock Dart BR Shoe takes a minimalist approach to an ultra-comfortable style. Its mesh upper delivers a sock-like fit, while its adjustable midfoot strap provides a locked-down feel. Mesh upper is flexible and breathable. Molded midfoot strap has an adjustable closure for a personalized fit. Phylon foam midsole offers cushioned comfort. Rubber outsole has flex grooves to enhance flexibility and reduce weight.