2XU Men's Twin Rail Chamois Compression Cycle Bib Short 67% Nylon/33% Elastane Lycra Imported Multi-Elastic, multi density chamois made in Italy to the highest standards Twin Rail Chamois for the ultimate in precision fit with Twin Rail Saddles ICE X fabric with Xylitol and IR blocking for exceptional cooling Powerful 105D circular knit compression fabric for the ultimate in muscle stability and enhanced performance Y Elastic grip secures fit with out chafe or pull