The Beatrix NON VALVE Size:XL: 17.5 x 22cm the BASIC is reusable and

the BASIC is reusable and washable

ideal for cyclists and high-intensity activities within inner cities

living in or travelling to areas with high air pollution/smoke levels

it leaves behind minimal oil traces

Lightweight and breathable

The Beatrix NON VALVE Size:XL: 17.5 x 22cm the BASIC is reusable andThe Beatrix Non Valve boasts exclusive long lasting filter technology designed by the British Ministry of Defence. Filtering out nearly 100% of all harmful air pollutants and viruses. Lightweight, breathable material Filters 99. 6% of all viruses and 99. 7% of bacteria Filters PM10, PM2. 5, PM0. 3 Lasts up to 340 hours of active use (3 6 months) Ideal for air travel, grocery shopping, and crowded places Zero valve which results in limited ventilation