kiwi berries are bite-sized fruits that look like a fusion of kiwifruit, grapes and kumquats. the major difference kiwi berries and kiwifruit is that the berries have a leathery, smooth, green skin. they’re good for you, too! kiwi berries are rich in vitamins c and e and naturally low in fat, cholesterol and sodium. they’re also an excellent source of fiber, magnesium and potassium.