Rubber bands offer patented, soft-stretch Sterling grade. Each rubber band is made of high rubber content for greater elasticity. Reusable rubber bands come in a zip-lock bag for easy access and secure storage. Rubber bands meet Federal Specification AA-131-B; and are compliant with the specifications of FDA21CFR part 177.2600 for food contact of rubber articles. Rubber bands are also compliant with European Union Directive 2002/95/EC on the Restriction of Hazardous Substances (RoHS) and subsequent amended directives.