ShooterKing I-Heat Long-Sleeve Thermal Underwear
Heated thermal shirt for maximum performance in extreme cold

When temperatures drop well below freezing, the right base layer makes the difference between staying comfortable and performing well or having to end the hunt early. The ShooterKing I-Heat Long Sleeve Thermo Underwear is designed for hunters and outdoor enthusiasts who stay active even in the harshest winter conditions. Thanks to an integrated electric heating system with three heating panels, this premium thermal shirt delivers instant, adjustable warmth exactly where your body needs it most.

Combined with a breathable, stretchy fabric and an ergonomic fit, the I-Heat Long Sleeve is the ideal base layer for long hunting days, winter outdoor activities, and working in extreme cold.

Active warmth thanks to advanced I-Heat technology

Unlike traditional thermal underwear, ShooterKing I-Heat actively generates heat. The integrated heating system consists of three strategically placed heating panels: two on the back, including the lower back, and one on the chest. This ensures that the most important areas of the body are heated evenly, which helps maintain your core temperature during prolonged periods of sitting still or exposure to freezing conditions.

Power is supplied via a power bank (not included), which can be easily stored in the integrated side pocket. This ensures complete freedom of movement while keeping the power supply safely and discreetly out of sight.

Three adjustable heat settings

Depending on the weather conditions and your activity, you can easily choose from three warmth levels:

• White – 35°C: light support for cool conditions.
• Orange – 45°C: comfortable warmth during cold hunting days.
• Red – 53°C: maximum warmth for extreme cold and prolonged periods of inactivity.

These adjustable temperature settings make the thermal shirt suitable for a wide range of conditions, from autumn-like mornings to winter temperatures as low as -25°C.

Comfort that keeps you going all day long

Warmth alone isn’t enough. During intense physical activity, moisture must be quickly wicked away to prevent you from getting cold.

That’s why the ShooterKing I-Heat Long Sleeve is made from a high-quality blend of 80% nylon and 20% spandex. The fabric fits snugly against the body, offers excellent elasticity, and effectively wicks away sweat. This keeps the skin dry and comfortable, even as exertion increases.

The soft fabric prevents chafing under multiple layers of clothing, making the shirt ideal as a base layer within a technical clothing system.

Designed for real-world use

The ShooterKing I-Heat Long Sleeve is designed for users who are exposed to low temperatures for extended periods of time.

Key Benefits:

• Integrated heating system with three heating panels.
• Active warmth up to 53°C.
• Three easily adjustable heat settings.
• Quick-drying and moisture-wicking fabric.
• Highly elastic for maximum freedom of movement.
• Built-in side pocket for a power bank.
• Machine washable (after removing the power bank).
• Comfortable fit under jackets and other layers of clothing.

Ideal for hunting, outdoor activities, and working in extreme cold

During a winter stalking hunt, the active heating prevents your back and chest from getting cold when you sit still for long periods of time. During a driven hunt or a long hike, you’ll enjoy a pleasant feeling of warmth without bulky, restrictive layers of clothing.

The I-Heat Long Sleeve also offers a clear advantage for bushcraft, winter trekking, dog training, ice fishing, nature conservation, and work in cold storage or outdoor environments. The combination of active heating and moisture management ensures that you can continue to function comfortably, even under the most challenging weather conditions.

Premium technology for discerning users

Whereas traditional thermal underwear relies entirely on body heat, the ShooterKing I-Heat Long Sleeve generates heat on its own when needed. This helps maintain your body temperature more effectively, increases comfort, and allows you to stay focused longer while hunting or engaging in other outdoor activities.

The high-quality materials, durable construction, and smart integration of heating technology make this thermal shirt a reliable investment for anyone who regularly engages in outdoor activities in cold and wintry conditions.

Why Choose the ShooterKing I-Heat Long-Sleeve Thermo Underwear?

The ShooterKing I-Heat Long-Sleeve Thermal Underwear combines innovative heating technology with superior comfort. Thanks to three integrated heating panels, three adjustable heat settings, excellent moisture management, and a comfortable stretch fit, this thermal shirt provides exactly the protection needed during intense hunting and outdoor activities in extreme cold.

For hunters and outdoor enthusiasts who refuse to compromise on warmth, comfort, and freedom of movement, the I-Heat Long Sleeve is an essential part of their winter gear.