Massage cupping supplies are available in a variety of sizes, shapes and materials. When choosing a cupping kit, consider five key factors: cup material, desired suction strength and features, sizes of the cups included, number of cups per set and price point. Although cupping professionals tend to favor glass cups, silicone and plastic cups are the most popular for at-home use. Glass cupping cups typically require a skilled technique as the suction can be significantly more intense. Features can include biomagnetic needles, negative ionic rimmed cups, and TENS cups. Many cupping therapy sets come with carrying cases, suction pumps and anywhere from 4 to 15 cups in different sizes.