I have one of the Primos bowhunter vests and think highly of it too , get you normal size and fits all tasks . I use mine over a t-shirt and also over my layers they are designed with the elastic on the back to keep tioght to your body , so as not to snag or get in the way of your bow . I'm using mine in Colorado in mid to late September , varying degree's of temp and have full faith in my vest to handle the job . Just get a size larger if in doubt , but they are good .