AFS-TEX Active anti-fatigue mats are designed to provide the ultimate standing surfaces combining prolonged comfort and effective body support. Reduces the strain on feet, legs knees and back joints that can be caused through prolonged standing. The AFS-TEX 4000X provides a contoured, non-linear ergonomic surface specifically designed for use with standing and height adjustable desks. Contains anti-microbial content to protect the mat surface from microbial deterioration. Effective 24/7 for the life of the product. Ideal for office or home use.