Heating pads come in various forms, including electric, microwavable, and chemical heat packs. Electric heating pads provide adjustable heat settings and consistent warmth, making them ideal for prolonged use. Microwavable pads, often filled with natural materials like rice or flaxseed, are convenient and can provide targeted relief. Chemical heat packs are portable and useful for on-the-go pain relief. Each type has its advantages, allowing individuals to choose one that best fits their lifestyle and pain management needs.