Seirus is all about finding solutions to real problems, and in that vein, their new Heat Wave Base Layers provide supreme warmth, without bulk. Leveraging 30+ years of innovation and forward-thinking design, the new Heat Wave Base Layers merge Seirus’ proprietary HeatWave™ fabric with added wicking and ventilating fabrics for all-day, every day comfort and quality. The #1 selling technology in glove liners, now available for your whole body.

Known for keeping extremities warm since 1984, Seirus now keeps the whole body warm, from head to toe and everything in between. Two categories of base layers, Body-Mapped and Reversible, offer amazing versatility.

Seirus HeatWave™ technology offers a dual-stage heating system that combines reflective technology with kinetic properties to amplify your body heat and reflect it back to you. By itself, the uniquely engineered Thermal Reflective Layer amplifies 20% more warmth inside than traditional linings. Additionally, a kinetic process uses the wicking energy to generate a 4-5 degree increase in warmth, keeping you drier, and making for an incredibly thin and versatile, actively performing fabric.

“Our HeatWave fabric has been a fan favorite for years,” said Danica Carey, Director of Marketing at Seirus. “Creating Base Layers is not only a natural extension for the fabric and the brand, but our customers have been asking for it. We’re always looking for ways to provide versatility in our products and create items that perform for multiple activities and applications, and this all-new line lets us take versatility to another level of cross-over between active and leisure time, giving us all more opportunities to have fun longer without having to bring extra gear along.” 

HeatWave™ Mapped Base Layers feature a combination of 3 fabrics to keep you dry, comfortable, and warm. Seirus’ Mapped Base Layers combine 4-way stretch HeatWave fabric for comfort and warmth in key locations like shoulders, arms and lower back. Strategically placed MaxWick™ fabric and high-performance Polygiene® anti-microbial mesh at perspiration zones keeps skin dry by releasing excess heat and moisture. Available in women’s and men’s tops and bottoms.

HeatWave™ Reversible Base Layers offer full HeatWave fabric coverage, in a reversible design that allows the wearer to ‘show a little sheen’ with the reflective side out, or flip them inside out for solid color. Either way, the fabric maintains full functionality and everyone wins.

HeatWave™ Mapped Base Layers

Body Mapped for greatest efficiency

Men’s Crew Neck Top MSRP $130

Women’s ¼ Zip Top $135

Bottoms (Men’s and Women’s) $120

Features:

  • Athletic Fit
  • Engineered Body-Mapped HeatWave fabric for more warmth and rapid wicking
  • Anti-Chafing Flatlock Seam Construction
  • Polygiene® Mesh Antimicrobial Ventilation Zones for focused perspiration evaporation
  • Tops have Raglan sleeves for comfort during intense activities
  • Bottoms have a smooth contrast waistband to Stay-Put and gusseted undercarriage for increased mobility
  • Reflective hits at chest, nape and leg

Materials:

  • 4-Way Stretch HeatWave™ with integrated spandex for improved stretch & shape retention
  • Ergonomically placed Max Wick™ fabric for increased breathability
  • High performance Polygiene® antimicrobial mesh at perspiration zones for microbiome balance and odor control
  • Moisture Control/Breathable HeatWave™ to stay dry and comfortable

Colors: Carbon, Silver, Rose Gold (Women’s only)

HeatWave™ Reversible Base Layers 

Reversibility reflects versatility and style

Men’s and Women’s Crew Neck Top MSRP $100

Men’s and Women’s Bottoms MSRP $90

Features:

  • Classic Fit
  • Reversible
  • HeatWave™ fabric for more warmth and rapid wicking
  • Anti-chafing flatlock seam construction
  • Polygiene® Mesh anti-microbial ventilation zones
  • Tops have Raglan sleeves for comfort during intense activities
  • Bottoms have a brushed back elastic waistband to ‘Stay-Put’ and gusseted undercarriage for increased mobility
  • Reflective hits at chest, nape and leg

Materials:

  • 4-Way Stretch HeatWave™ with integrated spandex for improved stretch & shape retention
  • High performance Polygiene® mesh antimicrobial at perspiration zones for microbiome balance and odor control
  • Moisture Control/Breathable HeatWave™ to stay dry and comfortable

Colors: Carbon, Coyote

SEIRUS INNOVATION

Now 100% Solar Powered California HQ + Warehouse

The first thing to know about Seirus is that we’ve been innovating ways to keep extremities warm and comfortable, resulting in 20 patents 1978-2019 including one of the first to the market with rechargeable heated gloves. From skiing to celebrating, we use the most advanced fabrics and technologies in a unique R&D culture where everyone at our family business critiques, tests, and designs products that redefine all-weather comfort for your head, hands, and feet. And did we mention we’re a family business? So we take care of our employees, our partners, our suppliers, and our customers with the same care we give our products and processes, making sure they’re all durably made and awesomely comfy.