If you are between sizes; we recommend choosing the larger size.
Measure your body as follows to choose the size that suits you best:
Chest :
Measure around the fullest part, place the tape close under the arms and make sure the tape is flat across the back.
SIZE
INCHES
S
34 - 36
M
38 - 40
L
42 - 44
XL
46 - 48
2XL
50 - 52
3XL
54 - 56
4XL
58 - 60
5XL
62 - 64
The Ultimate Next-To-Skin Advantage
Comprehensive Protection Redefined
THERMACORE™ BASE LAYER T-SHIRT:
A High-Performance Shirt Built for Demanding Conditions
Keeps you drier, cooler, and more focused — whether under body armor or during intense activity.
INTEGRATED COMFORT LAYER:
Thermacore T-shirt removes moisture before it turns into sweat, helping you maintain an ideal core temperature so that you can perform your best so you can increase your efficiency and use less energy to do the same amount of work.
Unlike wicking materials that simply distribute moisture, the temperature regulating fabrics and materials with Thermacore Technology actually remove it.
INTEGRATED COMFORT LAYER:
Thermacore t-shirt is designed to work with all types of body armor. It is key goal is to help regulate temperature and moisture under soft armor, hard plates, or hybrid vests. That means less heat, less fatigue, and better focus..
Outcome: More focus. Less fatigue. Zero compromise.
This product does not provide ballistic protection on its own and is intended to be worn under body armor or plate carriers.
KEY FEATURES
Heat
Dispersion System
Reduces Sweat by
-24%
Fiber Technology
37.5®
Fresh 2 Skin
Base Layer
WARRANTY
WARRANTY
12 MONTHS
MADE IN
PORTUGAL
Stays Cool Stays Dry
Compared to Traditional Layers:
•Conventional 100% PES shirts often retain >50g of moisture under stress, with users experiencing “very hot” discomfort by mid-activity.
•The ThermaCore™ shirt retains significantly less moisture, delays discomfort to later stages, and enhances cool-down speed after exertion.
•Lothing with Thermacore Technology has been proven to decrease the rate of core temperature buildup, increasing athletic performance by up to 26%.
Thermacore Technology base layer t-shirts use microencapsulated wax to adapt to temperature changes, reducing heat peaks and sweat production by up to 24 per cent.
PRODUCT HIGHLIGHTS
37.5® Fiber Technology
Activated by body heat signals
Microclimate Control
Manages heat and moisture balance
Moisture Evaporation
Drives sweat away instantly
Fresh-2-Skin® Cooling
Menthol-infused for lasting freshness
THERMACORE VIDEO PRESENTATION
Reduces Heat & Sweat: Lowers skin temperature and sweat by up to 24% for improved comfort under armor.
Increases Performance: Helps regulate core temperature, boosting endurance and physical output by up to 26%.
Fast-Drying Fabric: Advanced fiber tech pulls moisture away before it turns into sweat—keeps you dry longer.
Built for Armor Use: Designed to fit comfortably under plate carriers and vests with minimal friction or bulk.
Instant Cooling Effect: Embedded menthol provides a cool-to-the-touch feel as body heat rises—no sweat activation needed.
HIGHLIGHTS
Microclimate Control
At the core of every Thermacore™ base layer is a proprietary blend of performance fibers and active infrared particles that regulate your microclimate in real time.37.5® Fiber Technology responds to body-generated infrared heat by accelerating the removal of moisture vapor — before sweat forms — helping you stay drier, cooler, and more focused.The result: faster cool-down, less sweat accumulation, and enhanced comfort in the most demanding conditions.
FRESH-2-SKIN® WITH MENTHOL
Thermacore’s Fresh-2-Skin® technology embeds microencapsulated menthol directly into the fabric, releasing a cool-to-the-touch sensation as body heat rises. This instant, long-lasting effect helps reduce skin temperature perception and enhances comfort.
More than just freshness, the menthol infusion delays heat stress and supports focus during prolonged wear under armor. Ideal for high-heat missions or intense training, it creates a cooling microclimate from the moment it’s worn.
Unlike moisture-wicking shirts that activate after sweating, Thermacore’s cooling starts immediately—preventing heat buildup before it begins.
Features
Warranty
CARRIER WARRANTY
2 years
DESIGNED TO WORK WITH ALL TYPES OF BODY ARMOR
This shirt is made specifically for use under bulletproof vests and plate carriers. It helps manage heat, moisture, and friction in high-pressure environments—keeping you cooler, drier, and more comfortable during extended wear.
FLEXIBILITY
4-way stretch adapts to movement.
LOW PROFILE
Invisible under your bulletproof vest or plate carrier.
STRUCTURE
Engineered knit for durable breathability
MAXIMUM VENTILATION
Releases heat through directional airflow
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