OGIO® OE321 OGIO® ENDURANCE Long Sleeve Pulse Crew. OE321STAY-COOL WICKINGULTRA-BREATHABLEFLATLOCK SEAMS FOR COMFORTREFLECTIVE DETAILS 4-ounce 100% poly jersey with stay-cool wicking technology Self-fabric collar Reflective O heat transfer at back neck OGIO Endurance heat transfer label for tag-free comfort Set-in sleeves Reflective stacked O heat transfers at sleeves Reflective O Endurance heat transfer at back left hem ** Sold only with Decoration