Features: Safe and breathable. Hypoallergenic,high filtration,capacity. Clean and helpful. Elastic ear-loops with no pressure to the ears. Provide some protection against dust, or some poisonous things. Description: Made of non-woven material, they are featuring good skin tolerance and comfortable to wear. Without glass fibers. Great choices for you or your family. One size fits most. Specifications: Material:cotton Package Included: 200/100/50pcs*mask Notes: 1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures. 2. Please allow slight dimension difference due to different manual measurement.