Seirus Masks and COVID
Face Masks for Social Distancing
Seirus has face coverings which fill the need cited by the Center for Disease Control (CDC) and local authorities recommendations to be used in conjunction with social distancing when in public. The CDC also stresses the importance of saving the Proper Protective Equipment (PPE) supply available of medical-grade masks for the sick and public health workers who need them most.
Our face protection is not antiviral, and they alone will NOT stop you from getting sick. Please note that most of our masks are designed to protect specifically against sun & weather exposure. While they can be considered an additional layer of security, non medical-grade face coverage is not to be used as a replacement to recommended practices such as those promoted by the CDC.
Many of our masks do have breathing holes and all of those are listed under the stormweight category. The options below are broken out by weight. Please be sure to get one appropriate for your needs (weather, area, etc.) And, as always, be sure to visit the CDC website as well as your local authority's online sources for the best actions you can take as we weather this new type of storm.
Coming soon is a full line of EVO head, face and hand protection with HeiQ V-Block. Check back soon and see our EVO Arc Masque available now!
BIO Arc Masque
LIGHTWEIGHT
MIDWEIGHT
STORMWEIGHT
QUICK SHADES
What Powers Our Base Layers?
Heatwave™ Technology—the ultimate innovation in warmth, built to keep you comfortable no matter how cold it gets.
🔥 Reflective Stage – Reflects your body heat back to you, keeping warmth where you need it.
⚡ Kinetic Stage – Your movement fuels the heat, turning energy into extra warmth.
When combined, it’s like having your own personal heat engine—lightweight, powerful, and always working to keep you warm.



Find Your Perfect Base Layer


Shop Heatwave Base Layers
No matter where your adventures take you, our base layers are designed to keep you comfortable, dry, and ready for anything. Explore our styles to find the perfect fit for your activity and the weather ahead.

All Season
Versatile | Lightweight & Buildable Warmth | All Activities | All Climates

Reflective
Versatile | Midweight Warmth | Medium-Intensity Activities | Colder Climates

Performance
Performance | Max Wicking | Targeted Warmth | Medium to High-Intensity Activities

Winter Weight
Heaviest | Maximum Warmth | Low to Medium-Intensity Activities | Coldest Climates
Shop All
Coreshield™ Storm Layer Jacket
Coreshield™ Storm Layer Jacket
Mens Heatwave™ Performance Base Layer Crew Top
Mens Heatwave™ Performance Base Layer Crew Top
Women's Heatwave™ Performance Base Layer 1-4 Zip Crew Top
Women's Heatwave™ Performance Base Layer 1-4 Zip Crew Top
Men's Heatwave™ Performance Base Layer Bottom
Men's Heatwave™ Performance Base Layer Bottom
Women's Heatwave Performance Base Layer Bottom
Women's Heatwave Performance Base Layer Bottom
Men's Heatwave™ Winter Weight Base Layer Crew Top
Men's Heatwave™ Winter Weight Base Layer Crew Top
Women's Heatwave™ Winter Weight Base Layer Crew Top
Women's Heatwave™ Winter Weight Base Layer Crew Top
Men's Heatwave™ Winter Weight Base Layer Bottom
Men's Heatwave™ Winter Weight Base Layer Bottom
Women's Heatwave™ Winter Weight Base Layer Bottoms
Women's Heatwave™ Winter Weight Base Layer Bottoms
Women's Heatwave™ All Season Base Layer Top
Women's Heatwave™ All Season Base Layer Top
Men's Heatwave™ All Season Base Layer Crew Top
Men's Heatwave™ All Season Base Layer Crew Top
Women's Heatwave™ All Season Base Layer Bottoms
Women's Heatwave™ All Season Base Layer Bottoms
Men's Heatwave™ All Season Base Layer Bottoms
Men's Heatwave™ All Season Base Layer Bottoms
Mens Heatwave™ Performance Base Layer ¼ Zip Mock Neck Top
Mens Heatwave™ Performance Base Layer ¼ Zip Mock Neck Top
Women's Heatwave™ Performance Base Layer ¼ Zip Mock Neck Top
Women's Heatwave™ Performance Base Layer ¼ Zip Mock Neck Top
Mens Heatwave™ Performance Base Layer Quick Hoodie Top
Mens Heatwave™ Performance Base Layer Quick Hoodie Top
Womens Heatwave™ Performance Base Layer Quick Hoodie Top
Womens Heatwave™ Performance Base Layer Quick Hoodie Top
Mens Heatwave™ Reflective Base Layer Top
Mens Heatwave™ Reflective Base Layer Top
Womens Heatwave™ Reflective Base Layer LS Top
Womens Heatwave™ Reflective Base Layer LS Top
Womens Heatwave™ Reflective Base Layer Bottoms
Womens Heatwave™ Reflective Base Layer Bottoms
Mens Heatwave™ Reflective Base Layer Bottoms