This person is just so cool, don't you think? Includes 1 x mannequin and 1 x air plant. Mannequin dimensions: 14cm x 4cm. Air Plant: Approx 5-7cm The mannequin has articulated joints. * Air plants don't require soil to grow, they absorb food and nutrients through the air. * Terrariums are hardy little habitats and will only need a little tending to.