i ordered the polar parka thru "glens outdoors". i'm 6'4, 250, with a 50" chest. knowing better & like a moron, i ordered the xl parka which, according to their chart, would be 1 size larger for my measurements. i could only wear a t-shirt underneath. sent it back & traded for a 2xl. fits awesome! i can wear a shirt & hooded sweatshirt underneath & still have excellent range of motion. parka is great & looks great. nicely made. i'll be getting the bibs next year. couldnt beat the price from glens either ($102). great company to deal with