My classic is a size 10.5 and it almost slips off of my middle finger (especially now that it is getting cold out) when I shake my hand around, so when I ordered an alpha the first day we could in size 10. My alpha is snug on my middle finger and is only a little tougher to take off when my hand is hot, couldn't ask for much better. I don't wear many rings but I would assume if 7.5 is difficult to get off your finger 8 may be about right.