Domestic Long Hair isn't a breed. It's the label for a mixed-ancestry cat with a long coat, the fluffy counterpart of the Domestic Short Hair. They come in every color and pattern, from tabby and calico to solid black, smoke and bicolor, and some resemble a Maine Coon or Persian without sharing that ancestry.
Because there's no breed standard, size, coat texture and personality differ from cat to cat. Most weigh 8 to 15 pounds and live 12 to 18 years. What they share is a coat that needs regular brushing to prevent mats and hairballs. In West Des Moines, that means a cat that can live happily in an apartment or a house, as long as the grooming routine and a few climbing spots are in place. Spend time with the cat in front of you, because that tells you more than the label.