Face Masks from BOCO Gear consist of a 2-layer fabric design with an internal pocket slit which could hold a filter. The outer layer consists of our woven polyester fabric while the inner layer is a durable knit performance fabric. The internal fabric includes a slit that exposes a pocket where you can insert a filter to help provide more protection. The soft elastic is sewn to both the top and bottom of the mask for a secure fit over the ears. These masks cover the mouth and nose comfortably.