Huk: Uniting anglers through performance-engineered, technical gear designed to fuel your passion and pursuit no matter when, where or how you fish The Huk Double Header Vented Long Sleeve Shirt Long Sleeve Shirt is packed with Huk Performance Technology to handle the elements on the water SUN PROTECTION: This fishing shirt protects your skin from the sun’s harmful rays - Huk added the most advanced sun-blocking +30 UPF materials to their apparel to block both UVA and UVB rays STAIN RELEASE: Because fishing can be dirty, Huk added a special stain release treatment that not only enables stains (such as oil guts and others) to be easily washed out but also resists oily substances from attaching to the garment in the first place ANTI-IAL: Like all sportsmen, fishermen sweat - Huk anti-ial treatment inhibits and kills the growth