Gill Marine Sun Adjustable Hat 17374-140 This wide-brimmed hat has been specifically designed for marine use and is great for keeping the sun out of your eyes and off of your neck. Features: Wicking inner headband.Stiffened and non-absorbent brim.Volume adjustment.Removable chin strap and adjustment. Technology: 50+ UV protection.Lightweight water resistant fabric. Features Wicking inner headband Stiffened and non-absorbent brim Voume adjustment Removeable chin strap and adjustment Circumference M 61cm L 63.8cm Gill Marine Sun Adjustable Hat