Canvas, also known as cotton duck, comes in a variety of weights. Sometimes it's measured in ounces, or it can be given a number that represents the weight. Numbered ducks are often used for more heavy duty applications, like tents, tarps, heavy work cloths, drop cloths, and artist's canvasses. If a canvas just has a weight and not a number, that means it's a lighter weight single fill duck, which are popular for bags, crafts, slip covers, liners, jackets, and much more. They're more flexible and also come in different colors. Watch the video for more info!