💨 Revolutionary Exhalation Activated Filters: Enhancing Breathability for Optimal Comfort - Blue1Set Review

non-woven. Ear Loop closure. Reusable Sports Mask - The sport mask made form non woven, activated carbon filter layer. workout mask is generally used for windproof and dust-proof when you riding, running. It also work great for, PM2.5, Cold. Cool masks -The pollution protection face mask is made of mesh Nylon which offers excellent permeability and it's lightweight,comfortable,breathable,skin-friendly,hand washable,suitable for all seasons. Runing Mask- The riding winter mask black of the neck area designed with the velcro, compact design, easy to adjust the size; One size fit for range 48-57cm, suitable for men and women. Prefect breathable face mask for working out, training mask,military mask, sports face mask. Filter Mask- Package includes 1 black sport mask with 9pcs Replaceable filters+ 2pairs Replaceable valves for your long time use. Dual one-way Breathing valves allow exhaustion of heat and carbon dioxide easily, providing smooth breathing,it doesn't heat up inside the dust mask. Customers Service - Please be free to contact us if you have any questions. We will try our best to solve your problem to ensure your best shopping experience.