Speedo Men's Longview Short Sleeve Swim Tee 100% Polyester Made in USA or Imported Block the Burn UV50+ protective fabric More body coverage for greater sun protection Tighter knit fabric for higher level of protection from the sun's harmful rays Improved fit so over-stretched product does not decrease the UPF rating Contrast splicing Lightweight and quick drying Relaxed fit  For a tighter fit, size down Fabric: 100% Polyester Jersey