Modern inspired bud vase in Thermally Modified Red Oak and White Oak. Hand rubbed and waxed, oil and varnish finish Test tube is removable for cleaning. 3 1/2" x 2 7/8" x 9"H Thermal Modification of wood is a treatment for outdoor use of wood without chemicals. The wood is brought to a certain temperature, essentially baked. This changes the nature of the carbohydrates and makes them not palatable for most insects and bacteria. This piece was made from scrap from a larger project. No color was added, just the baking process.