5 filters in the mask. A real neck saver for bear complex movements. So happy I found this. Excelente zapatilla, mi hija encantada con ellas. Remember to select the correct length when ordering any cords/cables! The AirPods are still wobbly in my ear but definitely a lot more stable I normally don?t spend this much on a pair of shoes but I just couldn?t resist because they were just too gorgeous to pass up, also the height of the heel was exactly what I wanted. Empty was the worst. The size chart for this pair of Birkenstocks and others I was looking at prior to ordering recommended I order a 37 if I wear a US size 6. It took a minute to figure out how to put together and was easy once I did.