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      FilterTech® Liner 4 Pack  - M/L

      FilterTech® Liner 4 Pack
      M/L

      $29.90 $20.93
      Anti Fog Strips 10-Pack - One Size

      Anti Fog Strips 10-Pack
      One Size

      $7.00
      Soft Straps - 3 Pack - Navy

      Soft Straps - 3 Pack
      Navy

      $7.00
      Soft Straps - 3 Pack - Beige

      Soft Straps - 3 Pack
      Beige

      $7.00
      Soft Straps - 3 Pack - Grey

      Soft Straps - 3 Pack
      Grey

      $7.00
      FilterTech® Liner 4 Pack  - XS/S

      FilterTech® Liner 4 Pack
      XS/S

      $29.90 $20.93
      FilterTech® Liner 4 Pack  - XL

      FilterTech® Liner 4 Pack
      XL

      $29.90 $20.93
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    Size guide

    Our XS/S and M masks are the perfect size for teens or smaller adult. Our L masks are designed to accommodate large-extra large adults.

    With our adjustable and removable head strap clip, the new Bio Mask can be tailor-fit for perfect comfort.

    To find the perfect size, we recommend combining both measurements below:

    YOUR WEIGHT MEASUREMENT

    We've found that overall body weight has a strong correlation with the shape and size of your face. Please use this guide as reference:

    Recommended Size BIO MASK Recommended Size ULTRA MASK
    XS/S 25 to 75 KG / 55 to 165 LB XS Under 25 KG / Under 55 LB
    S 25-50 KG / 55-110 LB
    M 51-75 KG / 111-165 LB M 51-75 KG / 111-165 LB
    L 76 to Over 101 KG / 165 to Over 221 LB L 76-100 KG / 165-220 LB
    XL Over 101 KG / Over 221 LB
    Recommended Size BIO MASK
    XS 25 to 75 KG / 55 to 165 LB
    M 51-75 KG / 111-165 LB
    L 76 to Over 101 KG / 165 to Over 221 LB
    Recommended Size ULTRA MASK
    XS Under 25 KG / Under 55 LB
    S 25-50 KG / 55-110 LB
    M 51-75 KG / 111-165 LB
    L 76-100 KG / 165-220 LB
    XL Over 101 KG / Over 221 LB

    EYE-TO-CHIN MEASUREMENT

    Measuring from the bottom of your eyes to the bottom of your chin is the most accurate measurement when selecting a mask size.

    Recommended Size BIO MASK Recommended Size ULTRA MASK
    XS/S 8 to 11.7 CM / 3 to 4.6 IN XS 6.5-7.9 CM / 2.55-3 IN
    S 8.10.5 CM / 3-4.1 IN
    M 10.6-11.7 CM / 4.2-4.6 IN M 10.6-11.7 CM / 4.2-4.6 IN
    L 11.8 to Over 13.1 CM / 4.7 to Over 5.12 IN L 11.8-13 CM / 4.7-5.11 IN
    XL Over 13.1 CM / Over 5.12 IN
    Recommended Size BIO MASK
    XS 8 to 11.7 CM / 3 to 4.6 IN
    M 10.6-11.7 CM / 4.2-4.6 IN
    L 11.8 to Over 13.1 CM / 4.7 to Over 5.12 IN
    Recommended Size ULTRA MASK
    XS 6.5-7.9 CM / 2.55-3 IN
    S 8.10.5 CM / 3-4.1 IN
    M 10.6-11.7 CM / 4.2-4.6 IN
    L 11.8-13 CM / 4.7-5.11 IN
    XL Over 13.1 CM / Over 5.12 IN

    If your measurements are different using the two methods shown, follow the eye-to-chin measurement as this is the most accurate.

    If either measurements are borderline we recommend picking the bigger size to ensure a great fit.

    Not finding your size?

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