To begin - I was dubious about sleeve and body length because I have short arms and am 5’1.” While the medium (my regular size in this type of garment) fit in the body very comfortably, I was able to cuff the sleeves to fit my arm length. The body of the shirt was longer than I like (and because I’d never wear it hugging my rear) I shortened it to the length that was preferably. As for warmth I will preface this by saying I AM ALWAYS COLD which is why I now live on the gulf coast of Florida for 22 years. That being said we do travel north and visit places where the temps drop below 70 (lol!) and I need warmth. Wore this over the Thanksgiving holiday in NJ and spent a good portion of Saturday in NYC outdoors. Granted, I wore a thin thermal type shirt underneath my wool turtleneck and a heavy coat but I remained toasty warm the entire time. I had no need for a scarf because the high neck sufficed. I wore the shirt 4 times over that weekend. The only thing that froze were my hands because I couldn't take pictures with gloves on! I laundered the shirt, inside out on a gentle cycle, tumbled it in the dryer for literally 2 minutes, and laid it out on a towel to dry. Came out picture perfect. I will definitely enjoy this shirt for years to come.