You'll benefit from thoughtful comfort technologies in our Guide Gear Insect Shield Hybrid Performance Shirt. Insect Shield repellent technology and UPF 50+ sun protection take care of typical hazards to exploring the outdoors. Not only is the fabric moisture-wicking and fast-drying, it's also highly abrasion-resistant yet breathable. So it handles active pursuits while preventing sweaty overheating. The innovative hidden back armhole design allows for increased shoulder mobility during your adventures. Plus, knit panels on the sleeves stretch for increased flexibility. It's a great do-all shirt for the Great Outdoors. Breathable, abrasion-resistant 100% polyester UPF 50+ UV resistance to help prevent sunburn Insect Shield technology converts clothing into long-lasting, effective and convenient insect protection Snap collar can be worn down or up for extra sun protection Lightweight fabric is moisture wicking and fast drying for cool, dry wear Anti-odor technology helps keep Shirt fresh Knit sleeves and side panels stretch for added mobility Mobility shoulder design for comfortable range of motion when active 2 zipper chest pockets secure your carryalongs Full snap front