When it comes to storing your belongings, a vacuum bag can be incredibly useful. However, you might not always have the terminology down pat. So, what are some synonyms for "vacuum bag?" One common alternative is "space-saving bag," which is just as descriptive of its function. Another choice is "compression bag," which conveys that the bag squeezes out air to reduce volume. If you're looking for a more general term, "airtight storage bag" or "vacuum storage bag" both work. Lastly, there's the more technical, industry-specific term "vacuum-sealed bag," which is still commonly used by manufacturers today.