I made sure to read the reviews before purchasing. Normally I wear smalls and this suggested a medium but I went with a large. The arms are a little snug but the rest of the hoodie fits as expected. Heat seems to work very well, have not tried it out doors yet. So far I am satisfied with it.I liked the sweatshirt and how fast the battery pack charges. It was super comfortable and I would recommend this brand. However I am a little upset because I ordered a Women's Medium and I got a Men's Medium so it doesn't fit my wife. I was hoping to have the sweatshirt for our trip this December but since I got the wrong one I have returned it.What a lifesaver this was! Received as a Christmas gift and a week later we got 14 inches of snow and lost power for 4 days in freezing temps. I wore this almost constantly. This came with two precharged batteries that last a long time. This kept the top half of me toasty warm. Thank you!!I love LOVE the fit of this jacket! It’s not your regular unisex cut... This jacket is actually designed for a woman’s body! NOT a boxy cut, at all! Ohhh, yes! I’d buy it again... ❤️It's one year+ and it's time for a review! Yes, it is exactly what I wanted!! And it still looks like brand-new. The battery charges perfectly and stays charged the whole 10 hours! Beat that, I say!! #gobiheatThanks Gobi Heat!!For the Medium that I returned, they made me pay $16 in postage, when it was their sizing that is WAY OFF!. I wear a Small, even the Large was too tight in the arms!This jacket is so cozy and warm!! I love the ability to adjust the heat settings depending on how much I need. I use it at work in my cold office and it’s AMAZING!!Way too small for an XL and did not appreciate having to pay $15 to send it back.The jacket died after a month!