Our Seamless Baselayers utilize synthetic yarns to pull moisture away from your body and evaporate quickly, to keep a consistent core temperature. Pair that with seamless construction, and it's comfort taken to another level. - Fabric Content: 58% Polypropylene, 37% Polyamide, 5% Elastane - Synthetic yarns are blended to have a soft feel and move moisture away from the skin all while providing the perfect amount of compression.