The canvas, pads, and panels are relatively inexpensive surfaces that are used for oil and acrylic painting. Such materials are acrylic painting paper, pads, and canvas. These particular items all depends on what type of medium the artist will be using in order to proceed with their artwork. These panels and papers are relatively inexpensive that work best with both oil and water based paints. If you are looking to stretch your own canvas, take a look at canvas rolls.
The most common of these is the acrylic painting paper. This type is the most inexpensive of the three. The acrylic painting paper is of a heavier weight than most paper, which helps against warping. Used typically for instruction, studies, sketching, and practice works.
The pads are typically smaller, usually 7oz canvas that is primed and can be used on any medium.
The third type, the panels, is the perfect blend of quality and economy. They are quite sturdy and resist warping, which adds value to the panels. Many types of panels are typical 5oz in size and made with 100% cotton canvas that is adhered with an acid free adhesive quality to the pads. The panels are typically individually wrapped and are approximately 1/8 inches thick.