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Product Image SIG-AM03


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In light of the worsening COVID-19 pandemic, GG team are issuing hand-made highly breathable DWR-fabric face-masks in low quantities. The face-masks will consist of a breathable DWR fabric outer, with a mesh inner that allows easy insertion of surgical masks for added protection if necessary.

These masks are NOT-FOR-SALE, but will be shipped with every order on our website, no minimum spend required. This is our team’s way of being of service to the global community and that we can at least make a difference, no matter how big or small. We seek your understanding that there are low quantities due to the hand-made nature of these masks.

Lastly, please stay safe, and we hope that the worst of the COVID-19 situation will be behind us very soon. 

UPDATE : GMT+8 / May 15th, 2020


Third batch of masks are now live. We have made slight adjustments to the pattern, allowing a tighter fit around the nose. The material has been upgraded to CORDURA® x STORM COTTON™ in this version .Similarly, we will be sending them with every order, no minimum spending required. In light of the current situation, we are currently working very closely with our supply chain vendors in order to try maintain a consistent supply of these masks. We will keep everyone updated if / when the situation changes. Thank you once again for your understanding, and stay safe.



  • NAME
    SIG Mask 03




    Water Repellent / Breathable
    Adjustable elastic strings
    Inner Compartment for Surgical Mask


    Free / come with order


  • SIZE
    Adjustable with Elastic Strings





  • Technique : CORDURA® x STORM COTTON™
  • Composition : 75% Cotton, 25% Nylon
  • Origin : Taiwan
  • Performance :
  • DWR / Abrasion Resistance / Fast Drying / High Breathability
    └ High Performance DWR Treatment = 70/30
    └ Improvement in Drying Time = 40%
  • Information :
    A new generation performance cotton by Cordura® and Cotton Incorporated. The technologies combine the tried and true, long-lasting durability of CORDURA® NYCO technique and the comfort of cotton. STORM COTTON™ is a finish applied to cotton fiber that effectively repels liquids and still allows for moisture vapor to pass through the fabric so it can move away from the body and dissipate into the environment naturally – helping keep the wearer more cool and comfortable. Because this special finish minimizes the amount of water that a cotton fabric can absorb, garments made with STORM COTTON™ technology are engineered to dry much faster than those made with untreated cotton which helps to minimize the amount of time and energy required for laundering.



  • Textile : Light-weight Mesh Fabric
  • Composition : 100% Polyester
  • Information:
    Mesh compartment adds comfort, breathability, and allows insertion of surgical masks.



  • Please adjust fit accordingly using nose-bridge metal strip in surgical mask.
  • Elastic string cords on both sides allow adjustment for optimal seal and fit on different face shapes/sizes.
  • This product is not medical grade and are not meant to take the place of N95 masks, which should be reserved for medical professionals in the healthcare industries
  • Please note: These masks are not medical grade, and they are not meant to replace N95 / surgical masks, but help alleviate the shortage of them which should be reserved for front-line healthcare/medical professionals.



  • Machine wash in cold water
  • Wash with wash bag would be recommended
  • Care and reactivation of DWR treatment : 
    - After washing, tumble dry the mask on low heat for 20 minutes.
    - Alternatively, if you are not able to tumble dry, iron the mask on a warm setting with a towel between the mask and the iron



  1. Service
    We offer worldwide shipping to all the countries. We are using DHL as default shipping service, but due to the policies and customs conditions from different countries, the shipping service will be changed on several countries to minimize the process time of the package.

    Once the package is dispatched, you will be able to receive a tracking number for your reference by E-mail or SMS.

    Please check the following list for the delivery days of the international shipping service.

    FedEX International Priority
    Delivery Days : 2-4 days

    DHL Express
    Delivery Days : 2-4 days

    SF Express
    Delivery Days : 2-4 days

    EMS Postal System
    Delivery Days : 5-7 days

  2. Shipping Days
    Please be noted that the usual shipping days of Guerrilla-Group are Monday / Wednesday / Friday with the exception of holidays (GMT+8).

    To ensure the product condition of your order, we will examine the products again before we send out the package. Therefore the package will be only processed on days we listed above. Please contact us if you need assist due to any urgent situation.

  3. Import Duties
    Customs and import duties and fees may be applied to international orders when the shipment reaches its destination country, such extra fees will be charged to the recipient by DHL / Fedex / EMS / SF-Express or your local customs office directly. Guerrilla-Group (GFIRMG Co., Ltd) has no control over such extra charges. Please note that such fees and charges are the responsibility of the recipient and vary from country to country.


  1. Return & Exchanges
    Please be noted that before you want to send back the package, a return application must be processed with us by E-mail. Please follow the return / exchange process below carefully, otherwise your application will be cancelled automatically and we will not able to process refund on your order.

    1. We accept return and exchanges within 5 days of delivery.
    2. Return must be sent out in 3 days once your request is approved.
    3. Product should be unworn, new condition, tag attached.
    4. Customer will be responsible for the return shipping costs.
    5. Original shipping costs will be deducted once we proceed the refund.
    6. Customized items are not eligible for return or refund.
    7. Products over the amount of $200 are subject to a $15 restocking fee.

  2. Refund
    After we receive the return package, you will be refunded the full amount of the product returned. It would take 5-10 business day to have the refund posted to your account. For any returned or exchanged items, we do not refund the cost of shipping of your original order.

  3. Sale Item
    Products purchased during sale periods are eligible for store credit only. Store credit will be issued through Guerrilla-Group Gift Card.

  4. Repair
    We do offer repair service, please contact us for further information.

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