Should the waistband fit snugly without a gap at the back? Ideally yes, the more your jeans hug your waist, the better. However, a small gap can sometimes be fixed with a belt. Related articles How many times should I wear jeans before washing them? What fit of denim is best for my body shape? What size should I purchase? Should jeans fit properly without needing a belt, or is it normal to need one? How should denim fit when you first get it? Will it stretch?