【NANOFIBER TECHNOLOGY】 Nanofiber masks are almost 100% effective at preventing dust. The nanofiber technology provides unique solutions and greatly enhances the ability to remove particulates from airstreams. With its thin nanofiber coating, the kids mask consists of very lightweight material with a flexible structure【4 LAYER PROTECTION】 The soft, comfortable material makes these kids’ face masks ideal for long days of wear. A layer of low melting non-woven protects the respiratory system from harmful external substances such as fine dust and nanoparticles. The inner layer of the kids’ face mask is made with spin-bond fabric, which maintains a soft and safe feel for your child's sensitive skin【ERGONOMIC DESIGN WITH DURABLE EAR LOOP】 The wing angle of the washable kid’s mask is designed to align with the nose, chin, and ear for a comfortable fit and effectively block the inhalation of fine dust through the adhesion structure. Skin-friendly, soft elastic ear loop that is made using soft and durable material to ensure comfort【NON-ODOUR】 We take pride in providing fresh and safe AirQueen masks that do not have any factory/toxic smell. Thinner and more durable fabric mask than KF94 that not only provide the good filtering effect, but also easy to breathe. With a very flexible structure and thin nonwoven fabric, these face masks have low weight nanofiber coating that fully meets the expectations of users【WASHABLE AND REUSABLE FACEMASK】 the Air Queen Kids size face mask can be washed and sanitized multiple times, unlike disposable face masks which can be reused up to 10 times. The children will both enjoy this child-size mask with its comforting face shape. For a variety of locations, such as schooling, cleaning, gardening, etc., keep your children in relaxed environment.