No Added Sulphites
All wine (and beer) contains some sulphites that occur naturally as a by-product of the fermentation process. Typically, additional sulphur dioxide (SO2) is added as a preservative and to prevent oxidation. For most people, this does not present a problem - if you are able to eat dried fruit or other sulphite-loaded foods, then you probably do not have a sulphite-sensitivity - but this sensitivity does exist.
While these wines are not 100% sulphite-free, they do not contain added sulphites and should pose a lower risk to those who are sensitive or allergic to sulphites.