Filter Pack BUFF® - 30 kids - Adult. Pack of replacement filters designed for BUFF® Filter Mask (adult size). Highly breathable to ensure your comfort on daily activities. Triple-layer construction, 98% bacterial filtration efficiency and water repellent properties. Non-reusable filters, 24 hours maximum reccommended use. Totally binder-free, latex-free, glue-free, fiberglass-free. One size. Designed for children. Please note no returns available on this product - please see Section 23 of the t&c's for more info