Fit Guide Fits true to size. Size up for a looser fit. Benefits One million+ perforations per shirt enhance airflow and comfort. Quick-dry, 30+ UPF protection, and antimicrobial fabric for extended wear. Cooling interior print designed to actively reduce skin temperature during movement. AIRTEX® 4-way stretch for unrestricted movement. Burgee reflective heat transfer at the wearer’s right sleeve. Covert vertical chest zip pocket with a durable, reverse coil zipper and branded pull tab. Yellow utility locker loop for easy drying and longevity. Details 77% Nylon. 23% Elastane. Machine Wash Cold. Line Dry. Imported. Built in collaboration with Sig Zane Designs, the Florence x Sig Zane Koa Airtex Aloha Shirt updates a classic Hawaiian silhouette with modern Airtex® performance. Lightweight and highly breathable, it offers quick-dry comfort, UPF protection, and 4-way stretch for unrestricted movement. Featuring Sig's original Koa artwork, this shirt blends timeless island style with technical innovation, carrying forward 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. BUILT FOR: HIKING, SAILING, FISHING