To attach the K9030 securely:
- Ensure the two ends of the band are equal in length.
- Tie a knot with the two ends at the end of the bands.
- Loop them over your head with one strap sitting just under the ear and another strap sitting just above the ear
- Adjust the mask on your face so that it is tightly sealed.
- Press the wire on the nose bridge so that it seals the remaining gap.
Once properly fitted, the mask should have a snug fit and be tightly sealed.
Please see the following video for a demonstration: Link