Fit Guide Fits true to size, but a tad smaller than a T-shirt. Size up for a looser fit. Benefits The most technical Utility Top in our line. Built for maximum output. UPF 50+ Antimicrobial treatment maintains freshness during high output activity. Next generation AIRTEX material is lighter, more breathable and our highest performance fabric ever. Covert mesh looks like a tee but performs like equipment. Engineered stretch. Made with mostly recycled materials. 'EQUIPMENT MODERN' reflective heat transfer. Yellow utility 'locker' loop helps you hang your garment to dry to extend its longevity. Details 50% Recycled Polyester / 50% Polyester. Machine Wash. Line Dry. Imported. Built in collaboration with Sig Zane Designs, the Florence x Sig Zane Koa Airtex Hooded Long Sleeve Shirt is engineered with lightweight, breathable Airtex fabric for maximum ventilation and quick-dry performance. Featuring Sig's original Koa artwork , it delivers UPF protection with a streamlined fit designed for long days in and around the water. Combining modern function with cultural heritage, this hooded shirt embodies the shared vision of FLORENCE and Sig Zane Designs. This print, Ka-Maka-Lau-Koa, illustrates a cycle within the Hawaiian forest from the young sapling to the mature koa tree. At one hundred twenty-five years old, the koa tree would be large enough to be carved into a canoe. To hull a canoe, a thirty-five to forty-five foot length along with a diameter of forty-eight inches or more is required. Lashed and tied together our canoes allowed the culture to migrate and flourish.