The WoodyKnows Ultra-Breathable Nasal Filters come in a convenient 6 pack, offering athletes and fitness enthusiasts the option of choosing either Narrow or XL sizes. Made by the trusted brand Woody Knows, these nasal filters provide superior breathability while effectively filtering out impurities and allergens, allowing users to focus on their workouts without distractions. Perfect for those looking to enhance their performance and maintain optimal breathing during their fitness routines.