Ortles Thermo Black - 5-Toe High Socks
Ortles Thermo Black - 5-Toe High Socks
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What material are they made of?
What material are they made of?
The socks are made with a composition of:
50% Merino
30% Nylon
15% Acrylic
5% Spandex
This specific blend is designed to overcome the limitations of pure wool: the Merino offers climate comfort and odor resistance, while the technical component ensures that the sock does not develop holes, does not slip down, and maintains the elasticity vital for the comfort of the five toes, even after many washes.
Are they summer or winter ones?
Are they summer or winter ones?
These socks have been designed with a closed structure and no mesh on the instep to maximize protection and warmth during cold seasons.
However, thanks to the high percentage of Merino wool (50%), they remain an excellent choice even for trekking in milder or warmer climates.
The reason lies in the very nature of the fiber: Merino does not simply retain heat, but acts as a natural thermal insulator.
It keeps the foot temperature constant, protecting it from external overheating, and manages moisture much better than cotton or light synthetics.
A foot that stays dry is a foot that doesn't "boil," even when temperatures rise.
How do I choose the size?
How do I choose the size?
Sizes may vary slightly between different models. Please refer to the size selectors on each product page (e.g., Size S - EU 36-40).
If your size is close to the next one, order the correct size.
Example: if you wear a 40, order "Size S - EU 36-40"
Difference between the various socks
Difference between the various socks
No-Show Socks
Invisible comfort for every day.
These socks disappear into your shoe, but you’ll definitely feel the comfort. They are ideal for:
- Days in the city or at work
- Light walks
- Gym workouts
👉 If you want to benefit from the comfort of 5 toes without looking for race-level performance, this is your daily choice.
1/4 Crew (Above the Ankle)
Smart protection for those on the move.
A perfect middle ground: the sock comes up just above the ankle to keep dust, small stones, or debris from getting in during activity.
Perfect for:
- Road running
- Trail running
- Intense workouts
- Long walks with low-cut shoes
👉 If you are always on the move and want performance and protection, this height is the right balance.
High
Maximum protection, maximum performance.
These are our “workhorse” socks. High, durable, and ready for anything. Designed for:
- Long, technical treks with hiking boots
- Ultramarathons on road or mountain trails
- Difficult terrain and challenging conditions
👉 When you want real performance, reliability, and protection up to the calf.
Compression
Energy and relief that lasts.
Our 5-toe compression socks are designed for those who really tackle infinite distances. Beyond the support of graduated compression, they include a cushioning layer under the sole of the foot that reduces impact and provides relief even after many hours of use.
Perfect for:
- Extreme trekking with rigid boots
- Ultramarathons on road and mountain trails
- Ultra-long duration activities and significant elevation gains
👉 If you are looking for maximum support and want to go further with less fatigue, these are the socks that will accompany you to the very last step.
Knee-High
Total support from toe to knee.
Our high 5-toe socks with graduated compression fully wrap the calf, supporting circulation to reduce swelling, fatigue, and heaviness. To better meet the different needs of climate and physical exertion, we have developed two dedicated versions:
1. Flow+ (4-Season Fabric)
Balanced compression (15-20 mmHg) & All-year-round versatility.
The benchmark model for those seeking constant but extremely comfortable support, ideal to wear for many hours without a feeling of constriction.
- Compression: 15-20 mmHg (medium graduated), balanced to stimulate daily circulation and relieve leg fatigue.
- Fabric: 4-season structure, soft and modular, perfect for any time of year.
- Perfect for: Prolonged standing at work, walking, long flights/car trips, and continuous daily use.
2. Air Flow (Super-Light Fabric)
Intense compression (25-30 mmHg) & Extreme breathability for hot weather.
Designed for the most challenging conditions, this version combines higher compression push with an ultra-lightweight fabric structure.
- Compression: 25-30 mmHg (strong graduated), intended for those who need maximum vascular and muscular support during exertion.
- Fabric: Super light and highly breathable, designed to dissipate heat quickly and prevent sweat buildup.
- Perfect for: High-intensity sports, running and trekking in summer months, or for those who suffer from significant swelling and need firm support.
💡 Which one to choose?
👉 Choose Flow+ if you want a versatile 4-season sock with medium compression (15-20 mmHg) for every day.
👉 Choose Air Flow if you are looking for more vigorous compression (25-30 mmHg) and an ultra-cool fabric designed for heat and intense activity.
Anti-Slip
Stability "glued" to the ground and maximum grip.
These socks integrate premium silicone grip under the sole of the foot to ensure superior traction. They offer you all the freedom of walking barefoot, encouraging the natural spreading of the toes, but with total security against slipping.
Perfect for:
- Pilates, yoga, and gym workouts
- Daily indoor use on hardwood or tile floors
- Those seeking hygienic protection and grip in studios or communal areas
👉 If you want to improve your balance and challenge your limits indoors with a secure grip, the Pro Grip socks are your silent allies.
Merino Wool
The perfect balance between nature and technology.
The socks are made with a composition of: 50% Merino, 30% Nylon, 15% Acrylic, 5% Spandex.
We studied this specific blend to overcome the limitations of pure wool. 50% Merino Wool guarantees the natural thermoregulation and softness you are looking for, but it is the technical component that makes the difference in durability. The Nylon creates a resistant armor that prevents premature holes in the heel and toes, while the elasticity of the Acrylic and Spandex allows the sock to wrap every single toe without slipping or creating annoying folds.
Year-round protection
They are born with a closed structure without mesh to offer maximum protection from debris and cold. However, thanks to Merino’s unique ability to manage moisture, they keep the foot dry and healthy even during trekking in milder seasons. A dry foot is a protected foot, from both cold and heat.
Coolmax
Unbeatable freshness and feet that stay dry.
Our socks with Coolmax® technology are the ultimate choice for facing the hottest days and high-intensity workouts. Thanks to the special channeled structure of its technical fibers, this fabric instantly wicks sweat away from the skin, transporting it to the outer layer of the sock for ultra-fast evaporation.
Maximum breathability against heat
The combination of the 5-toe design and Coolmax fiber eliminates moisture accumulation in the spaces between the toes, drastically reducing overheating, discomfort, and the risk of blisters. A lightweight, fresh, and incredibly breathable sock, designed to let your foot breathe even when the asphalt or trails are scorching.
Perfect for:
- Road running and trail running in summer
- Intense indoor workouts and high-perspiration sessions
- Those who struggle with heat and seek constant foot ventilation
👉 If you don’t want high temperatures to slow your pace and you demand a dry, fresh, and protected foot from the first to the last kilometer, this is your summer ally.
Every Ortles Run sock is created to offer you comfort, functionality, and freedom of movement. You choose the height, we’ll take care of the rest.
Here you will find the chart with all the specifications for our socks.
Who are they for?
Who are they for?
Our five-toe socks have been specifically designed for runners tackling long distances on trails and dirt paths.
We have tested the socks on technical high-mountain terrain, on dirt trails, and on asphalt.
You can, however, use the socks for any type of activity, benefiting from the great freedom they give your toes, for example:
- Trekking
- Road running
- Gym
How long do they last?
How long do they last?
We tested the socks for over 200 hours of outings on challenging terrains and trails.
Their exceptional durability was demonstrated by their ability to withstand the most extreme conditions without damage.
Reliable and long-lasting, these socks were designed to offer lasting comfort and protection, making them the ideal choice for adventurers seeking the most from their gear.
Tackle any challenge without worrying about your socks.
No more cold feet: the Thermo model in Merino Wool is here
The winter comfort you've been waiting for. After months of testing for durability and softness, we are proud to present our first model made of fine Merino Wool.
The Ortles Run Thermo model combines the freedom of 5 toes with the thermal power of nature, protecting you on the coldest days.
Why does Merino Wool change everything?
It's not just common wool. Merino is a "smart" fiber we chose to guarantee a perfect microclimate inside your shoe. Here are the real benefits for your feet:
🔥 Natural Warmth: Retains body heat by creating an insulating barrier against the outside cold.
🌡️ Active Thermoregulation: Unlike other fibers, Merino warms you when it's cold but lets excess heat "escape" if you move, avoiding the "overheated foot" effect.
✨ Zero Bad Odors: Merino is naturally antibacterial. It neutralizes unpleasant odors even after hours of trekking or a long day at work.
☁️ Absolute Softness: Ultra-fine fibers that don't "itch" or irritate the skin, ideal even for sensitive skin.
The technical structure of the ELITE model
We haven't sacrificed performance for warmth. The Thermo socks are built on the specifications of our top-of-the-line Elite model:
- Compressive Fit: The sock is designed to wrap around the foot and stay perfectly in place. It doesn't slide down or create annoying creases inside the boot, ensuring total stability.
- Cushioning: We inserted a cushioning layer under the sole of the foot. This offers a softer landing and further insulates you from the cold ground.
What changes compared to other models?
To maximize warmth, we redesigned the technical structure:
- ✅ Mesh Removed: We eliminated the breathable mesh on the instep found in other models. The weaving is now closed and compact to prevent cold air from entering.
- ✅ Tested Durability: Wool is often delicate, but Thermo socks have been reinforced to last over time without losing elasticity.
Ideal for every moment of your winter day
The versatility of the Thermo model will surprise you. They are not just technical socks, they are a daily ally:
- Trekking and Snow: Perfect under boots for blister-free winter hikes.
- Outdoor or Office Work: If you get cold standing still, these socks maintain a constant temperature.
- Relaxing at Home: The pleasure of walking barefoot at home, but with the warmth of merino wool.
- Winter Gym: For those who want to arrive and train with warm foot muscles.
Face winter with maximum natural comfort.
Try the difference of Merino Wool.
BORN FOR ADVENTURE: PERFECT FOR YOUR HIKES AND FOR EVERY DAY
Our socks are designed to accompany you everywhere:
- Trekking and long walks (Camino de Santiago, Via Francigena, trails)
- Days spent on your feet at work or in the office
- Leisure walks
- Running and sports activities
- Relaxing at home (because your feet deserve a rest!)
Whatever your day looks like, enjoy the freedom of separated toes.
Forget the annoyance of blisters and the feeling of cramped feet. Whether you are tackling a long walk or an intense day at work, the health of your feet is essential for feeling good.
That is why Ortles five-toe socks are the ideal choice for those seeking true comfort: they eliminate skin-on-skin contact, preventing blisters, redness, and calluses between the toes.
Do you want to rediscover the pleasure of walking without a care? This is the solution you have been looking for.
The five-toe design allows the foot to move naturally, improving stability and balance. Furthermore, by separating the toes, we drastically reduce interdigital moisture: this means drier feet, fewer bacteria, and goodbye to unpleasant odors, even after many hours.
Made with high-quality, breathable, and durable technical yarns, our socks are designed to last and fit any footwear, from hiking boots to everyday sneakers.
Treat your feet. Choose the model that suits you best and experience the difference of a natural, pain-free walk right now.
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