Make your cloth mask safer with HELIX.iso+™ - Double Protection drop-in filters.
- HELIX.iso+™ filters are compatible with most cloth masks that accommodate a replaceable filter and can be cut to shape. It is recommended to replace the filter as often as possible and should be disposed of safely.
- Offers Level 2 (highest) performance under the new ASTM F3502-21 standard for Barrier Face Coverings, meaning easier breathing and greater protection.
- Uses wool-based HELIX™ Filter Technology for greatest breathability. Any organic markings are harmless and are proof of the filter’s natural origin.
- Proudly made in New Zealand by Lanaco.
- For more information, see our FAQ.
Follow this link to find sewing partners that sell compatible cloth masks or sew your own by following our sewing template.
Easy to breath while also giving that added protection and can cut to suit mask shape.
Good to have a reliable quality NZ product with useful info about the protection. Easy to wear and breathe through. Tried the pattern provided and gave up and used a pattern from internet which I had used for my mask collection. Would have have been helpful to indicate which side of filter faces inward - fluffy or smoother side. It was not obvious to me and now on my original one I get fluffy bits in my mouth. NB I was using a brand name high quality quilt fabric on both sides of mask.
I found these filters were easy to cut to put inside other masks and to add that extra protection. They are easy to breather through, and they keep there shape and don't disintegrate.
This should fit all insertable masks. The quality is good, it is breathable and doesn’t start disintegrating or anything like that. I can breathe through, so great. You can cut and shape it according to yiur mask.
Really great filters. Easy to breathe through for sustained periods of time. Very reasonable price for the quality and peace of mind they bring.