Shoyido's Zen Incense is an ideal companion for meditation, quiet reflection, or simply to scent a large room. Each 13-inch stick is three times thicker than our other naturally blended stick incense, and has a burning time of approximately two hours. Many customers use them as time-keeping tools for meditation, or even for outdoor gatherings. Zen Incense is pure - no wooden core means you'll enjoy three subtle, natural, and timeless fragrances without the wood filler.