Indoor is undoubtedly an adjective that may be only used before a noun. It describes some thing Positioned, performed, or used within a building: For soaked regions, our flexible, anti-bacterial PVC workshop mats cut down the potential risk of risky slips and they are hygienic, self-draining and easy to clean. https://indoordoormats56788.weblogco.com/38059953/indoor-matting-no-further-a-mystery