Brynje Super Thermo T-Shirt with Inlay | Unisex Mesh Base Layer

Legendary Mesh Base Layer Performance for Every Season

The Brynje Super Thermo T-Shirt with Inlay is one of the most advanced lightweight base layers available for hiking, backpacking, mountaineering, skiing, hunting, endurance sports, and expedition use. Built with Brynje’s original Super Thermo mesh construction, this ultralight base layer delivers exceptional warmth, moisture management, breathability, and comfort across a massive range of temperatures and activity levels.

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

The Super Thermo system works differently than traditional base layers. Instead of trapping moisture against the skin, Brynje’s open mesh construction creates insulating air pockets while allowing perspiration vapor to move freely through the garment. The result is outstanding thermal regulation without the clammy feeling common in conventional base layers.

Why Brynje Super Thermo Mesh Works

Brynje original Super Thermo mesh is constructed from 100% Schoeller® Polycolon® polypropylene yarn knitted into a 3/8" open weave mesh pattern.

This advanced mesh design provides:

• 4–6x greater insulating power by weight compared to solid knit fabrics
• Exceptional moisture transport
• Outstanding breathability
• Rapid drying performance
• Lightweight comfort in both cold and warm weather

Because polypropylene absorbs virtually no moisture, sweat passes through the mesh structure in vapor form instead of soaking into the fabric.

Nothing wet against your skin.

Four-Season Performance

The Brynje ST T-Shirt performs exceptionally across changing conditions:

• Warm when layered beneath insulating pieces
• Cooling when outer layers are vented or removed
• Ideal for high-output activity
• Excellent for extended cold exposure
• Surprisingly effective in warm weather

The mesh structure continuously adapts to layering and airflow changes, making it one of the most versatile technical base layers available.

Backpack-Friendly Inlay Design

The integrated shoulder inlay provides a smoother surface beneath backpack straps for improved comfort during:

• Backpacking
• Mountaineering
• Long-distance hiking
• Ski touring
• Expedition travel

Product Features

• Original Brynje Super Thermo mesh construction
• 100% Schoeller® Polycolon® polypropylene
• Lightweight open mesh base layer
• Exceptional moisture transport
• Fast drying performance
• Shoulder inlay for pack comfort
• Four-season versatility
• Extremely lightweight thermal performance
• Long-cut fit for layering

Technical Specifications

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

Available Sizes

• XS
• SM
• MD
• LG
• XL

Perfect For

• Backpacking
• Mountaineering
• Ski touring
• Winter hiking
• Hunting
• Trail running
• Expedition use
• Cold weather layering
• High-output activity
• Four-season outdoor use

Why Professionals Trust Brynje

Brynje Super Thermo garments are extensively used by:

• Polar expeditions
• Special Forces units
• Emergency services
• Mountain athletes
• Expedition guides
• Winter endurance athletes

The combination of ultralight insulation, moisture control, and durability has made Brynje mesh systems legendary in extreme environments.

Fit & Sizing Notes

Brynje mesh garments are:

• Highly stretchy
• Cut long for layering
• Designed to contour naturally during movement

As body girth increases, garment length will naturally shorten slightly due to mesh expansion.

Generally:

• Women’s sizing runs approximately one size smaller than Unisex sizing
• Example:
  • Unisex Small ≈ Women’s Medium

Care Instructions

Washing

• Hand wash or machine wash gentle cycle
• Cool water only (maximum 85°F)

Drying

• Line dry only
• Do not tumble dry

Avoid

• Bleach
• Fabric softener
• Dry cleaning

Merino wool garments naturally require less frequent washing, helping extend garment life and reduce environmental impact.

Built for Extreme Conditions

Whether you're climbing alpine peaks, skiing deep into winter terrain, thru-hiking across changing climates, or simply looking for one of the most effective base layer systems ever created, the Brynje Super Thermo T-Shirt with Inlay delivers unmatched thermal efficiency and moisture control trusted around the world.

Lightweight. Breathable. Expedition-ready.

Brynje Size Chart
Unisex Shirt Sizing    Height    Waist    Chest
XXS    4ft 9″ – 5ft    25″ – 27″    32″ – 34″
XS    5ft 1″ – 5ft 3″    27″ – 29″    34″ – 39″
SM    5ft 4″ – 5ft 6″    29″ – 31″    37″ – 40″
MD    5ft 7″ – 5ft 9″    32″ – 34″    40″ – 42″
LG    5ft 10″ – 6ft    35″ – 38″    42″ – 44″
XL    6ft 1″ – 6ft 3″    39″ – 42″    45″ – 48″
XXL    6ft 4″ – 6ft 6″    43″ – 45″    48″ – 50″
3XL    6ft 7″ – 6ft 9″    46″ – 50″    51″ – 53″
Women’s Shirt Sizing    Height    Waist    Chest
XS    4ft 9″ – 5ft    25″ – 27″    28″ – 32″
SM    5ft 1″ – 5ft 3″    27″ – 29″    33″ – 36″
MD    5ft 4″ – 5ft 6″    29″ – 31″    37″ – 39″
LG    5ft 7″ – 5ft 9″    32″ – 34″    40″ – 42″
XL    5ft 10″ – 6ft    35″ – 37″    42″ – 44″
XXL    6ft 1″ – 6ft 3″    38″ – 40″    45″ – 48″
Unisex Pants Sizing    Height    Waist    Inseam
XXS    4ft 9″ – 5ft    25″ – 27″    27″ – 28″
XS    5ft 1″ – 5ft 3″    27″ – 29″    29″ – 30″
SM    5ft 4″ – 5ft 6″    29″ – 31″    30″ – 31″
MD    5ft 7″ – 5ft 9″    32″ – 34″    31″ – 33″
LG    5ft 10″ – 6ft    35″ – 38″    33″ – 35″
XL    6ft 1″ – 6ft 3″    39″ – 42″    35″ – 36″
XXL    6ft 4″ – 6ft 6″    43″ – 45″    36″ – 37″
3XL    6ft 7″ – 6ft 9″    46″ – 50″    37″ – 38″
Women’s Pants Sizing    Height    Waist    Inseam
XS    4ft 9″ – 5ft    25″ – 27″    27″ – 28″
SM    5ft 1″ – 5ft 3″    27″ – 29″    29″ – 30″
MD    5ft 4″ – 5ft 6″    29″ – 31″    30″ – 31″
LG    5ft 7″ – 5ft 9″    32″ – 34″    31″ – 33″
XL    5ft 10″ – 6ft    35″ – 37″    33″ – 35″
XXL    6ft 1″ – 6ft 3″    38″ – 40″    36″ – 37″
Hat Sizing    Circumference    Actual Hat Size
Small/Medium    54-56 cm    6 3/4 – 7 1/8
Large/Extra-Large    56-59 cm    7 1/4 – 7 5/8
Glove/Mitten Sizing    Circumference of Palm
SM    6.5″ – 7.5″
MD    8″ – 8.5″
LG    9″ – 10″
 

All sizes are averages and approximate. Your size may vary depending based on your body shape and the model.

Mesh base layers are generally quite stretchy in all directions and are cut long. As the girth increases the length will decrease

Generally the Women’s sizes will be one size smaller than Unisex. I.E. a Unisex SM is equivalent to a Women’s MD.

Laundry Instructions
Wool is a natural fiber which does not to be laundered regularly. A global wardrobe survey in 2015 by AC Nielsen confirmed that wool garments have a longer life than cotton – as much as 50% longer. Merino wool can be worn multiple time between washings which will prolong the garment life and protect the environment. The synthetic fibers like Schoeller® Polycolon can be machine washed and hung to dry.
Hand wash or machine wash on gentle cycle with cool water (not to exceed 85°F).
Line dry. Do not tumble dry.
Do not use bleach.
Do not use fabric softener.
Do not dry clean.