Gill 4401 Men's UV Rash Guard Short Sleeve is perfect to wear as a layering piece for comfort or to wear alone on warmer days for sun protection. Rash guards prevent chaffing under PFD or harness. High quality 6 oz. 4-way stretch lycra for comfort and close fit. Excellent UV protection (UPF 50+). Quick drying and flat locked seams. High neck. Durable stretch print detailing. Gill 4401 Men's UV Rash Guard Short Sleeve Features: 6oz 4 way stretch lycra fabric. Prevents chafing under PFD or harness. Flat locked seams and high Lycra neck for comfort. UPF 50+ UV protection. Quick drying. Sizes based on Men's Sizing Chart.