... shirts,printed polo shirts, dri fit polo shirts, UPF 50+ polo shirts,with pique fabric,yarn dyed fabrics or single jersey fabrics ... polo shirts is moisture wicking,quick dry,and permanent UPF 50+,material is 70% polyester staple fiber,30% cotton,single jersey ... requirement,flat-knit rib collars. Boy's UV protection UPF 50+ cotton printing polo shirts with embroidery