Durable canvas/ cotton material measured by oz. (density used to measure the thickness of the fabric). Often, natural fabrics are preferred in their natural/undyed state. However, if that is not the case for you then simply tell us what you need! Our team will work with our factories to determine if your request matches available stock colors or if a custom color is needed. When requesting custom colors, please provide either a PMS match number or specific CMYK values to ensure correct color matching.