According to health experts, neck gaiters could even spread the virus further than not wearing a covering at all. Researchers from Duke University found that the neck gaiter they tested was “worse than nothing.”“The neck gaiter that we tested did essentially nothing, and worse than nothing, because it appeared to make large droplets into small droplets,” Isaac Henrion, the study’s co-author, told CBS News. Neck gaiters are made of a circular piece of fabric that sits around a person’s neck. Health experts say if a neck gaiter was made with two layers of cotton, it could be more effective. Walt Disney World banned neck gaiters last month, saying guests will be required to wear a mask with ear loops or ties.