Paintball tactical vests can provide a variety of things that other paintball gear simply can not, including additional protection, a place for pods, a tactical look, and a variety of pockets or places to attach other bits of gear. These are commonly used more for magazine fed players, woodsball players, or tactical scenario players, but of course anyone can use a paintball vest as long as their field allows it. There is a variety of paintball vests available, they are all one size fits most and are typically adjustable to help ensure they fit most people.
