LIGHTWEIGHT TO GO THE DISTANCE. Mens Nike LunarConverge 2 Running Shoe delivers comfort with 2 densities of soft foam underfoot to smooth out the transition. Open-hole mesh provides lightweight, breathable comfort as you challenge your pace. Dual-density foam encourages a soft, smooth transition. Lofted open-hole mesh upper delivers lightweight breathability. Molded grooves in the outsole provide flexibility. Midfoot webbing integrates with the laces for a snug fit. Molded sockliner contours to the foot for a 1:1 fit. Plush dual-density foam has an ultra-soft core that is surrounded with a slightly firmer carrier foam. The 2 densities work together for a super smooth transition.