Rainwear is great, but only if you have it handy and ready to go on a rainy day. You may have all kinds of umbrellas, raincoats, pants, hats in your closet but they don't help you when you are already at work and it begins to pour outside. People who frequently work outside should be prepared with rain gear so they can continue to do their jobs safely and in a timely manner without being affected by precipitation. If you are a construction worker or a police officer, you likely already know how important it is to have the right gear for the weather. A construction worker can't give excuses that it was too rainy to do his work nor can a police officer stay in a patrol car to stay dry if people need help on a slick and dangerous, rainy highway.
When you think about getting rainwear, consider the type of work you do. You might want to get a hat, coat and jacket, or maybe a rain poncho is all you need. The nature of your work may require form-fitting clothing to do your job effectively so your clothes don't tear or hamper your progress. You also want to consider how quickly you can get in and out of your raingear. As a patrol officer or construction worker, you may be going in and outdoors intermittently so you need to consider your options for optimum performance.
Rainwear doesn't have to be just functional. It certainly has a particular function in protecting wearers from the rain, but that doesn't mean it has to be boring or feel uncomfortable. There are a variety of colors available from solids and prints as well as the quality and extended purpose for gear beyond rain. You might consider getting gear that has a heavier inner lining for added warmth and comfort if the conditions you work or play in include sleet and wet snow.
Consider what you might need to wear for rain boots too. A simple, pullover shoe cover might work or you may need knee-high rainproof boots to suit your needs.
Consider the color of your rainwear carefully. There is a reason that emergency personnel usually have bright yellow, orange, or white raingear. They need to be visible for their safety and the safety of others nearby. So unless your raingear is strictly for personal use, think about your need to be visible to others during rainy weather.