"Do not use on a child under 2 years old" 【All Day Comfort】：Medtecs' unique adjustable nose clip and extra-elastic earloops ensure a comfortable 3D fit for maximum protection. Medtecs Kids Masks are ideal for all-day wear. 【2 Sizes for Your Choice】：Child-sized (5.3” x 3.7”) & Youth-sized ( 6.1” x 3.7”) are available for children, teenagers and adults with small faces. Choose the right size to find your perfect fit and protection. 【ASTM Level 1 Protection】：Meets ASTM level 1 standards: PFE ≥ 95%; Delta P < 4.0; fluid resistance ≥ 80 mmHg. Medtecs dispoable mask is made of 3 layers of high-quality non-woven lightweight material, a middle melt-blown layer for filtration and 2 spun-bond layers for water-resistance and ventilation. 【Mask Up】： Mask up for school, camp, work, a trip to the mall, or any crowded indoor and outdoor areas. Medtecs Kids Mask