These devices (Wein Travel Pair Kit) work for us! We bought these for relief from winter flu and pet dander sensitivity (especially cat dander) as well as immunosuppression for medical conditions and medications needed to stay healthy. Both of us were often ill during the fall/winter, including hospitalizations for more serious conditions, sometimes developing from being in public places, as well as family members, their cats and dogs. We bought our first set of these wonderful devices about 4 years ago and the improvement in our health has been remarkable. Our general well-being has improved, flights no longer cause colds and hospitalizations almost immediately. We are so happy with them we bought a set for our grandson who is traveling to Japan to see his fiancee and he has returned unill to announce her. Obviously we really like these things and highly recommend them, hoping they work as well for you as they did for us. Note that they require a specific type of battery, which is available in bulk from Revain and other companies. We have not been paid or otherwise reimbursed for this review. An added bonus is that they now cost less than when you bought the original pair!
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