soundcore AeroFit 2 Pro is suitable for all users in its Open-Ear Form.

However, if you have smaller ear canals, switching between the two forms may not be possible.

How to Determine:

1. Prepare a ruler or measuring tape. 

2. Measure the straight-line distance of your ear canal (between the two measurement points) as shown below. 

3. Criteria:

- If measured distance > 16 mm: ✅ Suitable for soundcore AeroFit 2 Pro (both forms usable)

- If measured distance ≤ 16 mm: ⚠️ Not suitable for this product, but may fail to switch to ANC Form.

If you encounter any other issues or your issue has not been resolved, please contact us for further assistance.