Pearl Izumi - Ride Barrier Short Sleeve Cycling Base Layer Tops Front: 100% polyester Side panel: 70% Minerale polyester 27% polyester 3% elastane Splice: 80% polyester 20% elastane Imported Anatomic close-to-body fit PRO Transfer Dry fabric powered by Minerale provides optimal moisture transfer, dry time and odor absorption Barrier wind blocking fabric on chest keeps you warm Cycling specific fit with rotated sleeve construction