When there's a full sun forecast for your hike, pack the Sun Breaker Long Sleeve Shirt. This classic button up is a must-have for sun protection, offering UPF 50 fabric to save you from the relentless loop of sunscreen slathering. The mechanical stretch allows for big movements on the trail, while the moisture-wicking material keep you cool and dry on hot days. A great, lightweight option for sunny hikes, beach days, or long days pounding the cobblestone.