The MH Plasmic jacket fits well, and is definitely waterproof. Howeve in heavy humidity and warmth, it really fails to breathe as well as they say it will. After about an hour of packing up camp in heavy humidity, rain and temps in the low 70's, my arms were running with sweat and the back of my shirt was soaked with sweat. However, when I was just sitting around, it was a very effective barrier against the pouring rain. I'd recommend it, but not for anything more strenuous than light walking in the rain.
This review was written in the old system and had content requirements that are different than reviews written today.