What size and type filter can I use in the filter pocket version of the mask?

The filter pocket versions accommodate 80mm x 120mm filters. People commonly use PM2.5 filters, but even paper towels or other layering has been shown to add more filtration capabilities.

Where can I buy filters? Does NxTSTOP sell them?

NxTSTOP does not include filters with the masks, nor sell them on the site. However, they are widely available on Amazon.

• Adult: 8.5 inch x 5 inch (22 cm x 13 cm) inch at widest part
• Child (recommended for 8 yrs old and under): 6 inch x 3.5 inch (15 cm x 9 cm) at widest part

CARE INSTRUCITIONS 

CDC guidance on fabric masks states "a washing machine should suffice in properly washing a face coverings." Additional research has also shown that normal detergent is sufficient to disinfect the cloth against the covid-19 virus. If you choose to to launder at high temperatures, we strongly suggest choosing bamboo instead of cotton. Bamboo is much more resilient to high temperature treatment. 

• Wash Temperature: in terms of fabric longevity, we recommend wash cool with like colors, lay flat to dry. While it may be the case that hot water is better to clean/neutralize any microorganisms, hot water has adverse impacts on fabric in general. It causes fading or degradation of the fabric, which becomes less soft and looks worn. Cool/cold water is much easier on the fabric in terms of lifespan.
• Handling: if possible, wash inside of a small garment bag to help maintain shape and prevent tangling with other items.
• Detergent: preference is up to you, but we recommend unscented if possible, since any strong scents will obviously be right in front of your nose and be irritating.
• Drying: once again, some recommend high heat, but dryer heat has adverse impacts on the fabric too. Cotton specifically will shrink. Bamboo will be the best to withstand this type of treatment. Lay flat to dry is our recommendation. 

NxTSTOP ships anywhere in the world. General shipping guidance follows below, but NxTSTOP makes no guarantees about shipping times. Shipping times depend completely on delivery providers and NxTSTOP is not responsible for delays in shipping. NxTSTOP will not reimburse shipping costs for delays in shipping.

• US Standard Shipping: (2-6 business days)
• US Expedited Shipping: (2-3 business days) 
• International Standard Shipping: (10-20 business days)
• International Expedited Shipping: (5-7 business days) 

In light of COVID-19 NxTSTOP will not accept returns of face mask products, unless the original unopened packaged is officially marked Return to Sender by the delivery provider. In this case, NxTSTOP will refund the cost of the product minus the restocking fee.

However, if the mask arrives damaged through no fault of your own, we will provide either a replacement mask or store credit. You must notify us within 24 hour of shipment receipt.

Returns of all other products will be accepted within 30 days of order date if items are in their original condition, unused, and in original packaging.