Our 5-Star Fabric, used in over 60 styles, has been tested for sun protection and received a score of over 44 UPF.  According to the American Society for Testing and Materials, this score rates as "Excellent", their highest category. The shirts will block up to 98% of harmful UV Rays. 

The tags come in packs of 100.  They are printed on both sides and hole punched at the center top.