This is a Regatta Boy’s Alvarado VI Quick Drying Short Sleeve T Shirt with an excellent wicking performance. It is a moisture-wicking T-shirt that is perfect for outdoor activities. The shirt is made entirely of quick-drying polyester that is lightweight and comfortable. It is made of fabric produced from about three plastic bottles that have been recycled (500ml size). The Alvarado VI Quick Drying Short Sleeve T Shirt has an ergonomic design that is anatomically shaped to fit comfortably., 100% quick dry polyester fabric., Recycled fabric made from approximately 3 plastic bottles (500ml size)., Good wicking performance.