Here are a couple of observations from my wearing of the fishnet over the last few weeks, mostly working in the yard in Seattle with temps in the 30-50F range and some rain.
(1) The nylon Wiggys top stinks less than the polypro Brynje top.
(2) My favorite combo for either top is to pair it with a lightweight (about 3 ounces) nylon tricot T shirt. The stretchy T shirt really reduces the air movement around the fishnet holes and I feel much warmer than without the T shirt. The Brynje fishnet top plus nylon T shirt, together, weigh about the same as the Wiggy's top.


