Buy Naturals by Design Materials Inc. carpet from Warehouse Carpets at wholesale prices. Naturals by Design Materials Inc. consist of Sisal, Seagrass, Jute, and Coir. Designers use a lot of these natural fiber carpets and area rugs because of the neutral colors and unique textures. Design Materials products are great for high-traffic areas. We also offer custom Design Materials Inc. area rugs that are perfect for living rooms, patios, and sunrooms.