Upper portion made from soft, 4-way stretch, wrinkle-free, anti-pill fabric Permanent Nano Fluid Repellency allows fluids to bead and roll off fabric Antimicrobial flex underarm mesh vents increase ventilation and range of motion and prevents the buildup of odor-causing bacteria Dual communication wire access openings in side seams conceal and contain wires A flexible, functional and comfortable alternative to a traditional uniform shirt, the UV1 CX360 Short Sleeve Undervest Shirt offers both professional appearance and casual style. Visible portions of shirt match CX360?Class A shirt and coordinating V-Series External Vest Carrier, making it a must-have as part of a daily duty uniform.