Trail HZ LS T-shirt: optimal thermoregulation and breathability for winter trails
Whether you’re tackling snowy paths or facing a winter race, the Trail HZ LS T-shirt is your ideal companion. Designed based on athlete feedback, this long-sleeved shirt ensures you stay warm without overheating. The clever blend of Merino wool and polyamide provides natural thermoregulation, balancing warmth with breathability for intense efforts on cold days. Loose cuts and heavy fabrics are to be avoided for maximum performance.
Innovative body mapping
The Trail HZ LS T-shirt features strategically-placed mesh panels along the spine and arms, creating optimal airflow where you need it most. This smart design wicks away moisture quickly, keeping you dry and comfortable. The snug wrists and fitted cut provide a second-skin feel, while the self-locking half zip can be adjusted for extra ventilation or pulled up into a protective collar when temperatures drop. The Raglan sleeves ensure efficient movement without any excess material to hinder your stride.

T-Shirts (long sleeves)
T-Shirts (long sleeves)
First layer: breathable and thermoregulating second skin
Whether it’s called a base layer, undershirt, or baselayer, it’s the garment you wear against your skin. Its role is to wick away sweat during exercise, keeping you dry and preventing you from getting cold. Cotton and loose cuts are to be avoided for maximum performance.
3D Thermo technology
All 3D Thermo technical shirts are designed with a unique weave that creates a thermal mattress composed of ventilation channels and air cushions. Its purpose is to ventilate and maintain a constant body temperature. The microfiber fabric is antibacterial and dries quickly.
In milder temperatures, 3D Thermo baselayers can be worn alone or under a sweater, vest, or light jacket.

Baselayers
Baselayers
3D Thermo HZ LS Top
Completing / extending the base layer offer. Warmest polyamide base layer in our range 140g.
- The extra high collar for protection to keep the cold and snow out.
- Postural knitting in the back.
- The 3D weave provides maximum thermoregulation by creating an air mattress between skin and air to keep you warm and dry.
- Protection from the cold thanks to dense, body-mapped panels.
“I’m often too hot, so I use the 3/4 sleeve when it gets dark to put it under a jacket, it’s very light. It allows me to put on a clean, dry T-shirt before going to bed.
It takes up less space than a survival blanket. You should always have one in your bag”.
Perinne Fage
Ultra Athlete Trail & Bike

Weight
Weight, from the heaviest to the lightest:
- Winter Trail Postural LS Top
- 3D Ultra Light Racing Hoodie
- ON/OFF Base Layer LS Top
- Trail HZ LS Tshirt
- Hurricane Seamless HZ Top
- 3D Thermo 110g LS Tshirt
- 3D Thermo 50g LS Tshirt
ON/OFF technology
ON/OFF technology protects you from the cold air in winter. Composed of several cells, the ON/OFF fiber breathes with you and regulates your ventilation based on the intensity of your training.
Uphill, the ON function
A steep climb in ski mountaineering, intervals on the track, a KV, an ultra-trail with constant pace variations... you’re in full gear in intense training and need maximum ventilation. Maximum and personalized oxygenation is necessary.
During long and intensive training, you need more and more air for better oxygenation. Your rib cage opens, and your breathing accelerates; the fiber opens, allowing oxygenation.
Downhill, the OFF function
You’ve reached the summit, your heart rate slows, and your rib cage decreases in volume. You slow down or start the descent; you need protection.
The fiber closes, protecting you to ensure high support during the descent with perfect muscular strength.
Baselayers
Baselayers
“I use it both for ski mountaineering and for my running on cold winter days. It’s a perfect product, not only for its lightness but also for its cut and design. The product also feels more durable to hold up longer.”
Aurélien Dunand Pallaz
Ultra-trail & Ski Alpi athlete


Second layer: heat retention
This garment aims to insulate, meaning it retains the heat generated by the body. It should protect against the cold, dry quickly, and transfer moisture to the outer layer to regulate body temperature when the cold joins your training.
Our 3D Thermo Hoodie, for example, ensures thermal insulation thanks to its 3D thermo technology combined with a microfiber weave that acts as an insulator between the outside and the skin. Like many natural fibers, microfiber is soft and lightweight, with fibers trapping air to create an insulating mattress and retain maximum heat.
Thus, sudden temperature fluctuations won’t affect you; you won’t overheat. The fibers efficiently wick away moisture and dry quickly. It’s so light that you’ll forget you’re wearing it. This seamless hoodie is made of very soft microfibers to avoid any risk of friction or itching. Every detail, from its cut to the fibers, has been designed to offer a high level of comfort and freedom of movement. It will quickly become your favorite hoodie; you won’t be able to do without it.

Maximum thermoregulation
Thanks to a special microfibre weave which acts as an air mattress between skin and air to keep your dry and warm in chilly conditions.
Extreme lightness!
The hoodie is made of an ultra-thin, featherweight microfibre material you will barely feel you’re wearing.
Optimal comfort and zero irritation
Thanks to the stretchy, seamless microfibre weave and ergonomic design.

Hoodies
Hoodies
Hoodies
Third layer: staying dry
Windproof or waterproof jackets are the garments in contact with the outside world. Neither of the first two layers protects against wind, rain, or snow. Therefore, you need to add a garment that, worn over them, will allow these thermal layers to retain their properties in all conditions.
The Thunderstorm Waterproof 25/75 jacket, designed as a third layer, provides exceptional rain protection with a Japanese 3-layer membrane waterproof at 25,000 Schmerber and a breathability of 75,000. Weighing only 126 g, it ensures a perfect fit according to Compressport standards, eliminating any annoying noise and “parachute” effect. With reflective details, a well-fitted hood, 4-way stretch bands, and an ergonomic zipper, this jacket guarantees comfort, flexibility, and safety, making it the ideal ally to face the elements while maintaining optimal thermoregulation.
The Hurricane 10/10 Jacket stands out for its remarkable lightness and exceptional comfort, established as essential features by our elite athletes. Weighing only 105 grams, this waterproof jacket offers ergonomic flexibility and unmatched freedom of movement, meeting the strict requirements of trail competitions, including the UTMB mandatory equipment lists. Its minimalist design, with waterproof seams and adjusted Raglan sleeves, ensures optimal performance while minimizing its impact on mobility. The diagonal zipper closure and the ability to fold into its pocket emphasize the practicality of this jacket, making it an ideal third layer for effective thermoregulation during sports activities.
Compressport’s Hurricane Windproof Jacket is the ultimate companion for athletes facing the elements. Weighing only 100 g, it incorporates Tafta technology for optimal wind protection at the front and On/Off technology at the back for maximum breathability. Its tailored fit, 4-way stretch, and practical versatility make it the ideal choice for all outdoor activities. Slightly water repellent, and equipped with reflective details.

Jacket technologies (3rd layer)
- 25.000 Schmerber waterproof
- 75.000 MVTR breathability
- Waterproof seams
- Body fit
- Ultralight
- Ultra packable
- DWR (Durable Water Repellent)

Winter Insulated 10/10 Jacket
Thermoregulation
Hybrid construction
Gender body-mapping
Hurricane Waterproof 10/10 Jacket
10.000 waterproof
10.000 breathability
Ultralight
Thunderstorm Waterproof 25/75 Jacket
25.000 waterproof
75.000 breathability
Ultralight
Hurricane Windproof Jacket & Vest
Windproof
Ultralight
Freedom of movement
Jackets
Jackets
Jackets
Jackets
Jackets
Jackets
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