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Pull the jeans from the washer and leave them inside out. Also make sure the zipper is up and the jeans are buttoned. High heat puts extra and unnecessary stress on the material of the jeans, so stick to the low setting. Permanent press or delicate are both good options. It's best to dry only a few pairs of jeans at a time or they will take a lot longer to dry. Dryer balls are rubber or wool balls that beat against the jeans during the dry cycle. They loosen the fibers of the jeans, which provides extra softening. Dryer balls are especially helpful with stiff fabrics like denim. Look for dryer balls in the laundry sector of the grocery or big-box store. Dollar stores may even have a cheap version. Tennis balls are a cheap alternative which accomplish the same effect. Pull the jeans out of the dryer and roll them up while they are still hot. Fold the legs on top of each other. Then start rolling from the bottom of the pants until you get to the top. Leave them rolled up at least until they cool off from drying.
Leave the jeans inside out from the wash. Dry the jeans on a low heat setting. Add dryer balls or tennis balls to the dryer. Roll the jeans up when you take them out of the dyer.