The 2XU WOMEN'S COMP TRI SINGLET utilizes achlorine resistant lycra fiber called SBR Skin-X tohelp keep your garment fitting likenew for longer. With excellentstretch and recovery property, thefabric in this garment works withyour body movement whileretaining its shape. The polyamideyarn enhances moisturemanagement capability as youtransition from one sport to thenext. Another fabric used is the Sensor Mesh-X which is nylon lycra fiber with high filament hydrophobicnylon yarn and optimal airflowengineering, sensor mesh-xrepresents the ultimate inmoisture management. This garment is abrasion resistant and builtto last through demands ofswim/bike/run while still giving you unparalleled comfort.