The TamperAlert Hinge protrudes outward when torn, alerting the customer that the container has been opened. The hinge remains attached to the container, for no loose plastic pieces. ClearPac SafeSeal containers function as an easy to re-close and re-open, leak resistant two-piece container once the hinge is torn. Features exceptional performance in cold temperatures and accommodates freezing down to -22F. Embossed Bottom. ProPlanet SealThis product earns Dart's ProPlanet Seal because it contains 100% post-consumer recycled content. Food Container Type: Hinged Lid Container; Material(s): rPET Recycled Polyethylene Terephthalate; Material Type: Plastic; Interior Volume Capacity: 32 oz.