Bags come in short, regular and long. Be aware that each manufacturer has a different length to these. In the last few years women-specific bags are available. They fit better for most women and have the down filling distributed differently - more in the hip area. As for width, each model is slighly different. Some are cut wide for those who like more room. The narrow cut bags are generally meant for climbers who need to minimize the size of the bag. You can look up the width (called girth) if you google the bags on the internet. Girth is usually given in three locations - top, middle (hip) and foot. The only way you can really know if a bag fits, is to get in it at a store.