Their mid weight is more perforated cloth.
I wear a mid weight in Greenleaf for early season here and then switch to a Diffusion after green up.
Early season I wear a long sleeve moisture wicking camo t-shirt under my mid weight pullover. If it's cool enough I will add a long sleeve button up as well.
Late season depending on how warm it is I wear either a long or short sleeve moisture wicking t-shirt under my Diffusion pullover.
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