FLEXMON KF94: 4-Layer Non-woven fabric. | FLEXMON KF94: Elastic ear loop high elastic ear loop, pose less press to ears and face, avoid the uncomfortableness from long-time use. | FLEXMON KF94: Each mask is packed individually. | FLEXMON KF94: (PREMIUM QUALITY) All materials are made in Korea with premium quality. Tri-folded structure and hygienic individual packaging to prevent contamination. | FLEXMON KF94: (COMFORTABLE ERGONOMIC DESIGN) The unique 3D ergonomic structure tri-folding design provides a closer, more secure fit around nose and cheeks and under the chin.