Features of the Smartwool Women's Merino Seamless Strappy Bra Seamlessly knit Merino wool interior for enhanced next-to-skin comfort combined with an outer layer designed for support Engineered knit cups desinged to provide shape and lift Removable padding Fabric Details Shell: 38% Nylon, 30% Merino Wool, 20% Polyester, 12% Elastane Inner: 68% Merino Wool, 21% Nylon, 11% Elastane