This is a down jacket from KAIKO. I've only worn it once since I bought it and have kept it in good condition. It's size 1, and I think size 1 is the right size for most people. Thank you. Length: 66cm, Shoulder width: 46cm, Body width: 55cm, Sleeve length: 62cm The following is quoted from the product page: This item has high cold protection, with a high neck and elastic cuffs. The seamless pockets located along the side seams use micro-mutton on the inside and can also be used as hand warmers and smartphone cleaners. The front zip is a YKK escape zipper. You can take it on and off by pulling it strongly on the left and right. You can also enjoy changing the silhouette by adjusting the spindle at the hem. Also, you can wear it warmly up to your head by taking out the hood stored in the neck. This is a piece that can handle snowy areas and areas with severe winter cold.