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10% of all profits from Shield online sales will be donated to our Winter Outreach Partners + Free Ground Shipping on orders $150+!

Mens Heatwave™ Body Mapped Base Layer Long Sleeve ¼ Zip Mock Neck Top


Regular price $139.99

Unit price per 


A BASE LAYER LIKE NO OTHER - The Performance Weight Heatwave™ Top With Zip Up Mock Turtleneck Warms Your Core While Perfectly Managing Ventilation and Perspiration

• Seirus® Exclusive Dual-Stage Heatwave™ Technology - Kinetic Stage Amplifies Temp. 4-5°, Reflective Stage Returns 20% More Warmth
• Athletic Fit
• Mock Neck with 1/4 zip
• 4-Way Stretch Moisture Control/Breathable Heatwave™ with Integrated Spandex for Improved Fit, Shape, and Maximum Comfort
• Ergonomically Placed Max Wick™ Fabric For Increased Breathability
• Engineered Body-Map Heatwave™ For More Warmth & Rapid Wicking
• Polygiene® Mesh Anti-Microbial Ventilation Zones For Focused Perspiration Evaporation
• High-Performance Anti-Microbial Mesh at Perspiration Zones for Micro-Biome Balance & Odor Control
• Anti-Chafing Flatlock Seam Construction
• Raglan Sleeves for Comfortable Fit During Activities
• Reflective Hits at Chest
• The Warmest, Most Comfortable Base Layer

Men's Mapped Top
Men's Mapped Bottoms
Women's Mapped Top
Women's Mapped ¼ Zip Mock Neck Top
Women's Mapped Bottoms
Men's Winter Weight Bottoms
Women's Winter Weight Top
Women's Winter Weight Bottoms
Men's All Season Top
Men's All Season Bottoms
Women's All Season Top
Women's All Season Bottoms

See our Care Instructions here!

See our Product Sizing Charts here!


Can I ship to APO/FPO/International addresses?

At this time Seirus online sales are only available for customers in the continental USA, Hawaii and Alaska. Certain products are available in Canada through Sport Dinaco, you can find them at Prices may vary due to Exchange rates, duties, transport and handling. Please contact customer service to find a Seirus distributor in your country.

When should I expect my order to arrive?

All orders will be shipped within 1-3 business days of placing your order. You will have the option of selecting Overnight, 2-Day or Ground in the shipping options. Orders must be submitted by 10:00am PDT to go out same day. Overnight and 2-Day orders will be prioritized. Overnight shipping will arrive by end of the next week day (Monday through Friday). If you select ground it is an estimated shipping time of 3-5 business days. Actual shipping time may vary based on location, weather and other unforeseen obstacles. Business days are defined as Monday through Friday, 8:00am - 5:00pm PDT, excluding holidays. We are closed on New Year’s Day, Martin Luther King Day, Presidents’ Day, Memorial Day, Juneteenth, Independence Day, Labor Day, Thanksgiving Day & Christmas Day and will ship orders again beginning the following business day.


What is the return policy?
We accept returns within 30 days from the shipment date for any purchases made on All returns must be in new condition and have all original packaging and header cards attached. Once the return is received at our facility we will process a refund within 2-3 weeks. The customer is responsible for the freight cost coming back to our facility. We recommend using a carrier that provides a tracking # and insurance. If you purchased the item(s) from one of our authorized dealers, then please contact the dealer directly to process a return.

How do I return my order?

There is a packing slip that shipped with your order which includes instructions for your return. If you have misplaced this, you may download the Seirus Online Return Form to print and send with your item(s).

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