Mat Mates by Magnet Works (Studio M) are weatherproof and will look great either alone or in the decorative tray. Mats are dye-sublimated and has a non-slip recycled rubber backing. Mat trays are sold separately. Mats measure 18x30". Made in the USA. Magnet Works mats are medium thick with a rubberized, grippy backing. Also check out our year round set of 4 doormats and a mat tray at value price!