The Hāpai Wideback Singlet utilizes our latest environmental and sustainable performance fabric, EcoTech MF (multi-filament). Filament grading technology allows for permanent non-chemical moisture management, which outperforms traditional virgin yarns, helping you stay dryer for longer. Our engineers made this possible using a high filament count knit fabric from Unifi’s labs in the USA - 100% recycled Repreve®, fully traceable through the unique coding embedded in the yarn. Odour-causing bacteria are destroyed by the triple effect mechanism of Rudolf’s Silverplus® anti-bacterial technology. Bluesign® approved dying facilities ensure environmental protection. Our products are anatomically designed for a run-specific fit.