Fabric: 5.3 oz/yd2 / 180 gsm, 69% polyester, 26% lyocell 5% spandex jersey. Moisture-wicking and antimicrobial performance. The fiber lyocell from Lenzing® is a sustainably sourced, renewable and bio-degradable botanic fiber. Feature: Self-fabric collar with metal three-snap closure, side vents, stretch performance, active fit and easy care.