Sure. The most common form of extra padding found on any innerspring mattress is a pillow top. A pillow top is an additional layer of cushioning sewn over the innerspring comfort layer. Regular pillow tops are sewn on top of the mattress cover, while European pillow tops (Euro tops) are sewn underneath the mattress cover. Pillow tops can come in a variety of materials, and some of the most common ones include cotton, foam, wool, fiberfill, and down. Another option if you want to add an additional layer of padding to your existing mattress is by adding a mattress topper. Toppers come in all kinds of materials, including memory foam and latex foam. So if you want the bounce of coils and the cushioning of foam, a topper on your innerspring mattress might be a good option.