NWT SMOKE FREE FAST SHIPPING BUNDLE TO SAVE Fully adjustable shoulder straps, lined in mesh for added support, hook-and-eye back closure Bra: 90% Cotton / 10% Elastane, Powermesh: 85% Nylon / 15% Elastane We've combined the cool comfort and natural breathability of cotton with the strategic support of our high-tech Powermesh lining. You'll reach for this underwire bra every day