Here are some helpful tips on choosing the correct size waders from the Simms Factory Sales team. One of the most advantageous and unique aspects of Simms waders is how many sizes anglers can choose from. Why is this so important? At Simms, we firmly believe that a perfect-fitting wader will not only greatly improve your overall fishing experience, but it will also drastically increase the life of your wader. Check out this video and see what size will fit you best.