Variant Labs has created a form-fitting, washable knit mask with a stretchable, comfortable fit. The non-medical mask is 3D-knit in one piece for a durable finished product. The outer layer is tightly knit for protection, while the inner layer creates a pocket for a replaceable filter.

This knit filter mask comes with two filters which can be replaced between washes or as needed. The filter material has been tested using a NaCl challenge aerosol with 0.3 micron particle size, and is rated as BFE 98. It is made from spun-bonded 25 gsm poly-propylene and is custom fitted to the mask.