So happy I went with these. They're better quality than i was expecting, and a great price. Very flexible and lightweight, not stiff and plasticy. I wear a size 8 and they fit perfectly. Unless you're a half size or have a wide foot, I don't see any reason to order a size up. I have a thin calf, so there's room in the leg. If you have a thicker calf, I think you should be ok. I also have a narrow heal, so I was pleased to find that the insole, although not very cushiony, forms around your foot a bit, and actually keeps my heel from sliding up and down. Win. And the color was just as pictured, I ordered the midsummer blue. It's actually the thin stocking-like lining that you're seeing through a clear boot. When it says "lining" in the description, they don't mean anything thick for cold weather, these are definitely warmer weather boots.