From the Manufacturer's Label:
Ruffin' It™ Healthfuls Sweet Potato Slices are packed with nutritious goodness and a natural sweet flavor that dogs love. 100% natural dried sweet potato slices. We take pure, natural, Sweet Potato, slice them with the skin on to save all the nutritional benefits and dry them to chewy consistency.
No artificial preservatives, no fillers, no grains and no artificial flavors or colors.