Each piece of IRO timber is crafted using an intricate seven-step process that combines an eye for detail with the latest timber technology. Created using the traditional Japanese method of Yakisugi, the result is a beautiful, unique product that adds charm and character to a range of spaces. Manufactured from homegrown spruce, IRO’s sustainably sourced sleeper goes through the same seven-step production process as other IRO products, boasting a unique enhanced grain finish. High pressure treated and coated in a Mountain Grey wood cream to boost its longevity; the IRO sleeper has a stunning decorative surface that will add the wow factor to any landscaping project.