This mask is designed in a smaller size to ensure a proper fit on kids and the dinosaur pattern makes it more fun to wear. Ultrasonically-welded seams ensure mask layers remain secure and rest comfortably against the skin. Wide nosepiece constructed with high-quality aluminum to keep the mask in place across the nose and cheekbones. Soft mask and ear loop materials are carefully engineered and clinically preferred for extended periods of use without discomfort.