Brynje Super Thermo Long Sleeve with Inlay | Unisex Mesh Base Layer

Legendary Cold Weather Performance in an Ultralight Mesh Base Layer

The Brynje Super Thermo Long Sleeve with Inlay is one of the most advanced cold weather base layers available for backpacking, mountaineering, skiing, hunting, expedition travel, and high-output outdoor activity. Designed for severe environments and intense exertion, this ultralight mesh base layer delivers exceptional warmth, moisture management, breathability, and comfort without the bulk of traditional thermal clothing.

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

Built using Brynje’s original Super Thermo mesh technology, this long sleeve base layer creates insulating air pockets while allowing perspiration vapor to move efficiently away from the body. The result is outstanding thermal regulation and dryness during both intense movement and prolonged cold exposure.

Why Brynje Super Thermo Mesh Works

Brynje original Super Thermo (ST) mesh is made from 100% Schoeller® Polycolon® synthetic yarn knitted into a 3/8" open weave structure.

This advanced mesh construction provides:

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

Because polypropylene absorbs virtually no moisture, sweat passes through the mesh structure in vapor form instead of remaining trapped against the skin.

Nothing wet against your skin.

Built for Extreme Conditions

The Brynje ST Long Sleeve is heavily used in:

• Polar expeditions
• Military operations
• Search and rescue
• Mountaineering
• Winter backpacking
• High-output cold weather activity

This base layer excels in situations where sweat management is critical to maintaining warmth and safety.

Backpack & Dry Suit Friendly Design

The solid knit shoulder inlay creates a smoother and more comfortable surface beneath:

• Backpack straps
• Climbing harnesses
• Dry suits
• Load-bearing gear

This makes it an exceptional option for:

• Backpacking
• Expedition climbing
• Paddle sports
• Winter travel
• Technical outdoor use

Four-Season Versatility

Although designed for severe winter conditions, the thermostatic properties of Brynje mesh also make it highly effective during:

• Warm weather hiking
• High-exertion activity
• Fast-moving alpine travel
• Transitional seasons

The mesh structure adapts remarkably well to changing temperatures and layering systems.

Product Features

• Original Brynje Super Thermo mesh construction
• 100% Schoeller® Polycolon® polypropylene
• Long sleeve mesh base layer
• Exceptional moisture management
• Lightweight thermal insulation
• Shoulder comfort inlay
• Fast drying performance
• High-output cold weather performance
• Excellent under dry suits and pack systems

Technical Specifications

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

Available Colors

• Navy
• Black
• Green
• White

Available Sizes

• XS
• SM
• MD
• LG
• XL

Perfect For

• Winter backpacking
• Mountaineering
• Ski touring
• Hunting
• Ice climbing
• Expedition travel
• Military use
• Dry suit layering
• Cold weather endurance sports
• Alpine adventures

Why Professionals Choose Brynje

Brynje Super Thermo garments are internationally recognized for delivering:

• Outstanding warmth-to-weight performance
• Exceptional moisture control
• Superior breathability
• Long-term durability
• Reliable thermal regulation in harsh environments

These systems are trusted around the world where staying dry can directly impact comfort, safety, and survival.

Built for Serious Cold Weather Adventure

Whether you're crossing frozen terrain, climbing alpine peaks, paddling in cold conditions, or enduring long days in severe winter weather, the Brynje Super Thermo Long Sleeve with Inlay delivers lightweight thermal performance trusted by professionals and expedition teams worldwide.

Warm. Breathable. Expedition-ready.