If in between sizes I would recommend getting the bigger size. All synthetic. The upper bootie portion is a comfortable close fit to the ankle, which keeps me warm, but not such a close fit that would make putting them on difficult. And Im just an average 66 year old not some bot! :) Ours have held up as I would expect from sturdy hiking sneakers. I Personally wouldn?t wear them out in public Without a long top because they are form fitting, but if that?s your thing these are the perfect ?show it off? leggings. Meaning it would take forever to charge but then the battery would die pretty fast. This worked very well for 4 years, but suddenly it was difficult to copy text, and wandered around. und der war von Anfang an nie korrekt (Höchstwert: 83 %). I received it a couple of days ago, and as you can see from the photos, its the perfect size, and also a hard, and durable looking storage case and the zip seems sturdy enough and the fit and finish of the case is first rate also.