Lock in freshness with ClearSeal. Specially designed perimeter seal maximizes product freshness and minimizes leaks. Bar-locks provide a snap-tight, secure closure. Easy-access gripper tabs simplify opening. Clear plastic makes it easy to see what's inside. Lightweight, crush-resistant and stackable. Sandwich Container. Food Container Type: Hinged Lid Container; Material(s): OPS - Oriented Polystyrene; Material Type: Plastic; Interior Volume Capacity: 13.8 oz.