It is a reusable mask 30 times with Heiq Viroblock technology, for antibacterial protection. Transparent and Reusable Mask. Antibacterial Protection. Bacterial Filtration Efficiency (BFE%) ?98. Light and Transparent (Grey). It complies with the Spanish Regulation UNE0065. Water-repellent, antibacterial and anti-stain fabric. Recommended use: 4h. Durability: up to 15 washes.