Waterproof Golf Jackets and Trousers will generally last between 3-5 years before a new pair are required. This is dependent on a number of factors from the amount they are worn, how well they are maintained and where they are stored. It is also important to consider the person they are being bought for when purchasing as waterproof clothing will generally last longer with adult golfers over junior golfers who can out-grow the garments more quickly.