Tarps Direct 10 ounce canvas is manufactured from 100% cotton fabric. Treated to be water resistant, breathable and strong; our canvas tarps also have double stitched seams and hem with brass grommets approximately every 24" apart on all sides and corners. Canvas tarps are good for covering stationary items. They also reduce condensation since canvas is breathable. Water resistant treatment produces an odor in cotton canvas tarps that may lessen over time. The color of this tarp may have areas that are lighter or darker. May not be 100% consistent throughout. Tarps are made from multiple panels of fabric and will have seams. Due to the treatment of the fabric this tarp is not suitable to be used as a painting canvas. Treatment gives this tarp an odor. Due to the nature of cotton, this tarp may shrink and the color may bleed. This tarp is listed at cut size. This means that the measurements are taken before seaming and hemming. Final measurement will be around 6 inches on the smaller sizes and 3% to 5% on the larger sizes.