Flex underarm mesh vents provides body heat ventilation and increased range of motion High-impact melamine buttons Dual communication wire access openings in side seams keep wires obscure The newly enhanced Dutymaxx shirt now offers technology such as Nano Fluid Repellency that keeps wearer dry and comfortable. Redesigned for optimal functionality, the enhanced DutyMaxx shirt provides increased protection and durability! Its flex mesh underarm vents allow for not only body heat ventilation, but greater range of motion. Additionally, the enhancements include roomy chest pockets with dual access utility compartments and a hook and loop closure, new dual communications wire access openings in side seams and a tapered fit. 80% Polyester/20% Rayon Serge Weave/14% Fiber Stretch | 6 oz/sq yd, Machine Washabletable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }