SmartWool NTS 195 Running T-Shirt Contrast color stitching on interior flatlock seams - Aesthetic styling and helps reduce chaffing. Drop tail bottom hem - For increased coverage. Sculpted side panel - Help eliminates side seam for reduced chafing and body enhancing fit. UPF 35 - Reduces the amount of UV rays absorbed by the garment. Jersey and Rib knit - Construction.