PRO-FLOW F3502 Mask Filter 2-Pack
$2.13 – $2.44
High breathability filters for the STYLESEAL PRO mask. Now available with SMART VALVE ready option (no valves included).
✓ 15-day return or exchange mask
✓ Free shipping in Thailand over ฿599

STYLESEAL PRO-FLOW ASTM F3502 Mask Filters
Choose these filters for your STYLESEAL PRO mask if you want maximum breathability.
Features
- Conforms to the US ASTM F3502 mask standard (see test results)
- Filters a minimum of 50% air pollution, bacteria, and viruses
- Each re-sealable pack contains 2 STYLESEAL PRO mask filters
- No ear loops or nose pieces in the filters means they are eco-friendly
- Usage time is 4 weeks, but we recommend changing after 2 weeks for best results
- SMART VALVE ready option for use in valved PRO masks
SMART VALVE Benefits
- Expels heat, making wearing the mask more comfortable
- Reduces unhealthy CO2 buildup inside the mask
- Protects those nearby when the valve is closed
- Reduces condensation and bacterial growth, increasing the life span of filters
- Avoids fogging of glasses
- Affordable
- Easy to use
ASTM F3502 Test Results
STYLESEAL PRO meets the highest level 2 standards for both filtration and breathability.
Installation

Note: for use in the STYLESEAL PRO and UV PRO masks only.
Melvin Brown (verified owner) –
I purchased a Pro-Flow mask, filter set, and lanyard for my daughter two weeks ago. I’ve always had trouble finding a mask that works well for her. The Pro-Flow was a perfect fit. It gives her mouth and nose full coverage without encroaching on her eyes or popping off her chin and nose when she is speaking. I’ll be buying another one for myself very soon.