Brynje Super Thermo Longs Base Layer with Inlay

Ultralight Cold Weather Base Layer Bottoms Built for Extreme Conditions

The Brynje Super Thermo Longs with Inlay are high-performance mesh base layer bottoms engineered for extreme cold weather activity, expedition use, hunting, mountaineering, skiing, paddling, and demanding outdoor environments. Built with Brynje’s legendary Super Thermo mesh technology, these ultralight thermal bottoms deliver exceptional warmth, moisture management, breathability, and long-term durability without the bulk of traditional cold weather layers.

Camping Gear X is proud to offer premium performance apparel from Brynje of Norway, trusted by polar expeditions, Special Forces units, rescue teams, and serious outdoor athletes operating in harsh environments worldwide.

Designed for prolonged exposure to cold temperatures and intense physical activity, the Super Thermo Longs help regulate body temperature while keeping moisture away from the skin for superior comfort and performance.

Why Brynje Super Thermo Mesh Works

Brynje original Super Thermo (ST) mesh is constructed from 100% Schoeller® Polycolon® polypropylene yarn knitted into an open weave mesh structure.

This advanced design provides:

• 4–6x greater insulating power by weight compared to traditional solid knit fabrics
• Outstanding breathability
• Exceptional moisture transport
• Rapid drying performance
• Lightweight thermal efficiency

Unlike traditional thermal fabrics, the polypropylene yarn absorbs virtually no moisture, allowing perspiration vapor to pass through the garment instead of remaining trapped against the skin.

Nothing wet against your skin.

Built for Heavy Use & Severe Conditions

The Super Thermo Longs are specifically designed for:

• Extreme cold weather activity
• High-output movement
• Long-duration outdoor exposure
• Heavy-duty expedition use

The reinforced knee, thigh, and crotch panels improve durability and comfort during demanding activities and repetitive movement.

Perfect for:

• Hunting
• Mountaineering
• Ski touring
• Winter backpacking
• Ice fishing
• Paddling under dry suits
• Wearing beneath waders

Product Features

• Original Brynje Super Thermo mesh construction
• 100% Schoeller® Polycolon® polypropylene
• Reinforced knees, thighs, and crotch
• Lightweight thermal insulation
• Exceptional moisture management
• Fast drying performance
• Long-lasting durability
• Designed for extreme cold-weather activity

Technical Specifications

• Material:
  • 100% polypropylene
• Weight:
  • 130 g
• Material Weight:
  • 140 g/m² mesh

Available Sizes

• SM
• MD
• LG
• XL

Perfect For

• Winter backpacking
• Hunting
• Mountaineering
• Ski touring
• Ice climbing
• Paddling under dry suits
• Fishing waders
• Expedition travel
• Cold-weather endurance activity

Why Professionals Trust Brynje

Brynje Super Thermo base layers are internationally respected for delivering:

• Exceptional warmth-to-weight performance
• Superior moisture control
• Reliable breathability
• Long-term durability
• Thermal regulation during intense activity

These systems are widely used where staying dry and warm is critical to both comfort and safety.

Built for Serious Winter Performance

Whether you're hunting in freezing temperatures, climbing alpine terrain, paddling in cold water environments, or enduring long winter expeditions, the Brynje Super Thermo Longs with Inlay provide lightweight thermal performance trusted by professionals around the globe.

Warm. Breathable. Expedition-ready.