Engineered with AirVentTM fabric, the quick drying, anti odor Echo Duo TeeTM provides moisture wicking capabilities and UPF 15 sun protection, while the flat seam construction offers a chafe free fit.. . This product will be shipped directly from Outdoor Research and will leave their warehouse in 2 3 business days. Eligible for UPS ground shipping only. AirVentTM fabric. Trim fit. Reflective tape on the back of the neck. Moisture wicking and quick drying. UPF 15. Raglan sleeves. PolygieneAR odor control. Flat seam construction. Imported.