In addition to regular whole life which is typically designed to continue until age 90 or 100, plans are available which become fully paid up in a certain number of years (for example, 20-year payment) or at a certain age (for example, life paid up at 65). There are also variations on the whole life concept that allow more than one person to be insured (joint life, family plans) or that have different premium paying structures (single payment life, graded premium life).