JERSEYS - Premium Material and Fit - Your arms have never looked this good and been more comfortable with our stretchy sleeves with heat sealed cuffs. Cheap other brands of jerseys have stitched sleeves that rub your arms and feel awkward. Jersey: 90% Polyester / 10% Spandex (Elastane) / Bib: 80% Polyester / 20% Spandex (Elastane)