| Dimension | Drawstring | Zipper |
|---|---|---|
| Containment | Gathers the mouth rather than sealing it. A small item can still work its way out. | The only closure of the two that genuinely contains contents against movement. |
| Internal sizing | Needs headroom above the contents for the channel and the gather — always taller than the contents. | Needs seam allowance on all sides and a straight run for the tape, which constrains the shape. |
| Cost | Lower — no hardware, reuses the simplest and most common pattern in the catalogue. | Higher — tape, slider and pull are three separate components, plus assembly. |
| Presentation | Reads as a gift the moment it is picked up. The closing gesture is part of the experience. | Reads as functional and repeat-use rather than gift-first. |
| Repeat use | Works, but wears at the channel and does not reseal as positively as a zip. | Built for daily opening and closing — the standard choice for cosmetics and travel storage. |