Most gloves allow you to order S/M/L, but this is of the one-size-fits-all variety, which I don't actually agree with. I have small-medium sized hands (am 5 feet 1 inch tall) and struggled to get these black gloves on. Anyone any taller needing a medium-large would definitely struggle, but perhaps they will loosen over time?
On the plus side, they are snug, warm and pretty and look far more expensive and classier than the price would suggest. Overall, a good bargain.
Update 08/02/13 - the gloves have stayed snug and warm, even in this really cold weather we've been having - I have fur-lined leather gloves from a trusted high-street shop that don't keep me as warm. However, this means that it remains a bit of a struggle to get them on, but once on, they are perfect.