slimmer chin and cheeks [SEP] these are thick jaw exercisers that really do work i have bought a few different ones of these but these are firmer and work better they come in their own carrying cases so you can take them anywhere i use the carrying case to sanitize them they can be cleaned with soap and water but the best thing i have found to use to clean them with is toothpaste and i sanitize them with mouthwash it gives it a better flavor when your biting down on them these have really helped with my double chin and have made my cheeks slimmer great value