Nanotec Filter Refill <br><i>for ProSport Masks</i>

Nanotec Filter Refill
for ProSport Masks

Regular price $9.99
Shipping calculated at checkout.

A pack of 10 Nanotec Filters for use with our ProSport Masks. Keep your ProSport Mask protecting you at all times.

To ensure optimal protection, we recommend you replace your filter after each use.


- Pack of 10 Nanotec Filters
- Filter Materials: 100% Polypropylene Fabric 
- Filters last 12 hours
- Resistant to boiling water & alcohol


- Filter Measurements: 4.13" x 2.95" 

Blue Bear Shipping Policy

Blue Bear Protection is dedicated to shipping your products quickly and efficiently. 

  • ALL of our products ship directly from the USA
  • Most orders will arrive in 3-5 days, however due to the current COVID-19 crisis, some customers may experience delays, please be patient
  • We offer expedited 2-Day shipping via UPS, DHL and USPS, depending on your location
  • We currently only ship to the United States, we will be shipping internationally shortly, please stay tuned
  • Shipping times are calculated once the order has been fulfilled, not once the order has been placed 
  • Orders placed before 12 PM EST will ship the same day, orders placed after 12 PM EST will ship the following day
  • Orders placed on Friday after 12 PM EST will ship the following Monday

If you have any questions about your order, please reach out to our friendly customer service team here


Blue Bear Protection is here to help keep all of your bears safe. All orders from Blue Bear Protection come with our 100% Satisfaction Guarantee. If you are unsatisfied with your order, please fill out the form below within 30 days of receiving your order we will provide a full refund or send a replacement to you, free of charge. 

Customer Reviews

Based on 20 reviews
Annette P.

Nanotec Filter Refill <br><i>for ProSport Masks</i>

Elliott T.T.
Arrived fast & great service

We got these in mail speedily & BB actually answers customer emails & inquiries fast!

Donna T.
A little small

These filters are well made and breathable. I wish they were a little bit larger so they would fit nicely, and not move around in my mask.

Lukasz G.
I loved these masks.

Fantastic for flying

Good replacement filter

These filters are not like the one that comes with the pro sport mask,but they fit as well. It doesn’t say in English on the package that they are Kn95. Maybe the specifics on the certificate mean the same thing.They arrived promptly and I am happy with them. The mask itself is super comfortable, but this review is about the filters.