It starts with a protective shell of breathable Gortex which prevents penetration of exterior liquids while venting interior gaseous liquids. Within this water proof breathable shell you add layers of breathable insulation. You modify the interior layers to correspond to the exterior temperatures. When the water is really cold during mid-winter, neoprene is better insulation than Gortex. The days are short and interior perspiration and condensation are usually not problems.
Grandmas like to catch fish too.
Fit is important. How your clothing fits determines how you look, how you feel and how long your garments last. This is also when you look the best. We would all like to have perfect bodies. We all deserve a chance to be at our best.