Our Sentry Plus Short Sleeve Shirt with Zipper is the perfect choice for those looking for a body armor-accommodating shirt. It's crafted from 7.0 - 7.5 oz. per linear yard, tropical weave 100% polyester fabric, with break-resistant melamine buttons and a zipper front. The added length to the sides helps to keep the shirt tucked in, while the wickable soil release color ensures it looks great for longer.