Features: DissolveMark Day of the Week Labels dissolve in any water temperature in less than 30 seconds and leave no adhesive residue. FDA-compliant for indirect food contact DissolveMark Day of the Week Labels are a safe and labor-saving method of food labeling. Day of the Week Labels are available in a variety of sizes and styles each with a header corresponding to the desired day of the week.Great For: labeling portion and prep containers. Materials: Dissolve-A-Way adhesive that dissolves in any temperature of water in less than 30 seconds. DissolveMark Day of the Week Labels meet FDA requirements for indirect food contact and are 100 Percent biodegradable.