## Common ground
All options are nose plugs, used to block or seal the nasal passage.
## Options at a glance
**3926.90 – Plastic-made**
- **Defining trait:** Constructed primarily from synthetic plastic materials.
- **Typical examples:** Disposable swimmer’s nose clips, lightweight medical nose plugs.
- **Best fit when:** The product is rigid, mass-produced, and intended for single use or short-term wear.
**4016.99 – Rubber-made**
- **Defining trait:** Made from natural or synthetic rubber, offering flexibility and elasticity.
- **Typical examples:** Reusable nose clips for swimming, soft medical nasal devices.
- **Best fit when:** The product needs to stretch, conform to the nose shape, or be reused multiple times.
## Key differences
| Feature | 3926.90 (Plastic) | 4016.99 (Rubber) |
|------------------|--------------------------|----------------------------|
| Material | Rigid plastic | Flexible rubber |
| Reusability | Usually single-use | Often reusable |
| Fit & comfort | Less adaptable | Better contouring |
## How to choose
- Is the nose plug made of hard, non-stretching material? → 3926.90
- Does it stretch or flex to fit the nose shape? → 4016.99
## Overlaps & pitfalls
A product may combine plastic and rubber (e.g., a rubber band with a plastic clip), making classification ambiguous. If both materials are significant, prioritize based on the **main functional component**—the part that performs the sealing or clamping. If unclear, the material used for the nose-contacting or adjustable part usually determines the HS code