The Guardian long & short sleeve shirts feature a semicompression underlayer from the lower chest to the waist, constructed with VaporCore™, powered by 37.5® Technology, designed to comfortably conceal and allow fluid access to firearms without chafing the skin.
The under layer is a great design for those that don't want to wear extra layers underneath. Great for moisture-whicking. Overall, shirt is light weight with a bit of stretch making a very comfortable shirt under movement. The hidden snap buttons are an awesome feature that look sharp. The under layer is removable with a thread removing to convert back to normal button down.