The Circular Line is made of compressed materials from recycled plastic bottles Everything is 100% recyclable. Even the screws. The material is as robust as acrylic. Can be returned to the manufacturer or recycled at the end of its life. Ergonomic: Reduces neck and eye strain and prevents neck problems and headaches. Short viewing distances between document, screen and keyboard. Suitable for books of all thicknesses and heavy files. Can be adjusted to 4 positions BakkerElkhuizen guarantees the longevity of its products. Register your product before the basic warranty expires on the manufacturer's website using the registration code or the EAN number on your product for an extended warranty of up to 5 years on electronics or even longer warranties on non-electronic products! * Extended warranties apply to all non-electronic products with the exception of all gas spring parts, which are covered by a 5-year manufacturer warranty.