Perceptions of mask fit and discomfort among young Japanese post-lifting of mask-wearing mandates

Purpose Our long-term goal is to develop fit and comfortable household masks. This study aimed to investigate the attitudes of Japanese youth towards wearing masks one year after the mask mandate was lifted, compared to their attitudes before the spread of COVID-19 infection. It also aimed to propose a physical evaluation method to assess the fit of masks. Design/methodology/approach In 2024, a questionnaire was sent to young Japanese men and women to assess their frequency of mask usage, awareness of proper fit, and the problems associated with improper fit. In addition, a pilot study was conducted to measure the distance between the mask and face, using a flat mask with numerous holes and a dummy. Findings Although the proportion of youth who frequently wore masks increased, the proportion of men and women who did not wear them remained the same as before the spread of infection. In addition, a significantly high proportion paid attention to the fit and reported that their masks fit them well. The distribution of the mask–face gap was illustrated. A continuous gap was observed from the top edge of the mask for female dummies and from the top and side edges to the nose and mouth area for male dummies. Originality/value The results of this study will be beneficial to mask manufacturers in developing new mask designs with improved fit and in providing accurate instructions on the proper method of wearing masks.