Bought these for my wife, after reading all the reviews we ordered the size 10 (she normally wears 9.5) they were about a size too big so we returned them and got the size 9 which still left her room to wear thick socks.  They are very light but really roomy and comfortable.  They can be turned up so that the furry part on top is against your leg she likes that.  They are warm and waterproof perfect for our trip to NY.