1.Extra-value Packages:2 pcs Neck Gaiters and 10 pcs carbon filter. 5 Layer Filter can isolated all harmful substances and protect your skin and health. Enough to replaceable with new replacement. 2.Soft and elastic fabric: It is suitable for most head sizes for men and women. Breathable for smooth breathing, easy cleaning and fast drying. 3.Multi-function: Our neck gaiter can use as neckerchief, headband, face scarf, bandana as your need. Available for walking running hiking and other outdoor activities.