In regard to the exact glove etiquette of when to wear, where to wear, and any other suggestions regarding them, I’ll let you make a few searches for yourself if that is important to you. I don’t want to tell you what you should or should not be doing regarding them. I can give you a summary of what I learned when making my own search, though. Opera gloves are the longest and most formal type of evening glove. Evening gloves are worn to formal occasions, too, but are usually about elbow length. Both evening and opera gloves are usually made from satin, silk, tulle, or velvet. Gloves referred to as cocktail or formal gloves are the shortest. They’re usually made from lace, satin, or velvet.