The Clockwork Elves sativa variety is an extremely potent combination of sativa flower and sativa-derived kief. Each nug is rolled in kief, giving it a tan to brown color. For those of you wondering what kief is, it is pure resinous trichome powder with a very high THC content. There is no standard sativa strain chosen, so each batch of Clockwork Elves is slightly different, making this combination as mysterious as the elves themselves.