JT4510 The Flagstaff Jersey features the new SmartWool Technical Knit Merino fabric, which improves the jersey’s fit. Estimated arrival: Feb 2010. A natural alternative to synthetic cycling jerseys. Flagstaff 75% Smartwool, 25% Polyester Slim fitting Mesh panels at underarms and back yoke for venting 3 back pockets with a concealed secure zip pocket inside center back pocket Reflective logos and piping Fabric weight 170gm/m2