The Under Armour Base Map 1.5 Crew shirt is great for early to mid season hunting and during high-exertion hunting. Constructed mainly of Base 2.0 weight fabric, the Base Map 1.5 shirt also features Base 1.0 weight fabric under the arms, to dump excess heat, keeping you dry and comfortable in the stand. The quick-drying 4-way stretch polyester blend material allows for a full range of motion and prevents muscle fatigue, keeping you dry, warm, and comfortable. Flatlock seams make for a more uniform, comfortable fit. ArmourBlock anti-microbial treatments will help protect you clothes from odor-causing bacterial formation, allowing for closer shot opportunities in the field.