Outerknown prides itself on sustainability first and foremost, which is why this shirt is crafted from 100% recycled ...

BALEAF Men's Sun Protection Shirts UV SPF UPF 50+ Long Sleeve Rash Guard Fishing Running Quick Dry Lightweight | Amazon.com from GolfDigest.com ...

The long sleeve comes in 12 colorways and sizes small to 3XL. No matter the colorway, this piece is constructed of UPF 50+ fabric or Ultraviolet Protection Factor, which blocks up to 98% or more ...

We tested five cool, comfortable boating shirts to find out just how effective UPF ratings are in predicting ultraviolet light penetration. UVA, UVB and UPF UVA and UVB light are two wavelengths of ...