Smartwool Zip T Lightweight blue 100% Merino Wool Made in USA of Imported Yarn Jersey and rib knit; UPF 35. Form fit Sculpted side panel eliminates side seam for reduced chafing and body enhancing fit. Contoured sleeve cuff and drop tail bottom hem for increased coverage 14" (35.5 cm) center front zipper with semi-locking logo slider and chin guard Contrast color stitiching on interior flatlock seams Style: SW0SL629