Thermal Underwear
Undiemeister® Thermal Underwear
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Undiemeister® Dark Red Boxer Briefs Reef Clay

As low as 24.95
Undiemeister® Green Boxer Briefs Misty Forest

As low as 24.95
Undiemeister® Blue Boxer Briefs Storm Cloud

As low as 24.95
Undiemeister® Grey Boxer Briefs Lava Rock

As low as 24.95
Undiemeister® Black Boxer Briefs Volcano Ash

As low as 24.95
Undiemeister® Orange Boxer Briefs Canyon Dust

As low as 24.95
Undiemeister® Turquoise Boxer Briefs Sea Breeze

As low as 24.95
Ice Blue Boxer short detail

As low as 24.95
Olive Green Boxer short detail

As low as 24.95
White T-shirt Round Neck front

As low as 29.95
White T-shirt V-Neck front

As low as 29.95
Blue T-shirt Round neck front

As low as 29.95
Blue T-shirt V-neck front

As low as 29.95
Black T-shirt V-Neck front

As low as 29.95
White T-shirt Deep V-neck front

As low as 29.95
Khaki T-shirt Deep V-neck front

As low as 29.95
Undiemeister® White Slim Fit Long sleeve t-shirt Round Neck Chalk White

As low as 39.95
Undiemeister® Black Slim Fit Long sleeve t-shirt Round Neck Volcano Ash

As low as 39.95
Undiemeister® Black Slim Fit Tank Top Volcano Ash

As low as 29.95
Undiemeister® White Slim Fit Tank Top Chalk White

As low as 29.95
Undiemeister® Black Briefs Volcano Ash

As low as 24.95
Undiemeister® White briefs Chalk White

As low as 24.95
Undiemeister® Blue Briefs Storm Cloud

As low as 24.95
Undiemeister® White Boxer Briefs Chalk White

As low as 24.95
Welcome Pack 3 = 2

54.79 Regular Price 79.85
Undiemeister® White Slim Fit Longsleeve V-Neck Chalk White

As low as 39.95
Undiemeister® Black Slim Fit Longsleeve V-Neck Volcano Ash

As low as 39.95
Undiemeister® Black Loose Fit Boxers Volcano Ash

As low as 29.95
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Thermal underwear for men: sustainable and warm with Undiemeister

Undiemeister offers the best thermal underwear for men who seek both warmth and sustainability. Made with our exclusive Mellowood® fabric, our thermal underwear provides perfect insulation and breathability. Designed for comfort, durability, and optimal protection against the cold, Undiemeister thermal underwear is the ideal choice for the conscious man.

Why is Mellowood® perfect for thermal underwear?

Mellowood® is a patented fabric developed exclusively by Undiemeister, consisting of 68% TENCEL™ fibres derived from sustainably sourced beechwood, 28% organic cotton, and 4% elastane. This unique combination makes Mellowood® the ideal material for thermal underwear. It is not only soft and comfortable but also CO₂-neutral, contributing to a more sustainable environment without compromising on warmth and insulation.

Sustainability and comfort go hand in hand

Undiemeister understands that comfort is crucial when it comes to thermal underwear. By using Mellowood®, we offer a fabric that retains heat while wicking away moisture, ensuring you stay at a comfortable temperature. Whether you're exercising outdoors or taking a winter stroll, our thermal underwear supports your every move.

Thermal underwear for colder days

Thermal underwear is essential during the colder months of the year. It keeps warmth close to the body and protects against low temperatures. The TENCEL™ fibres in Mellowood® provide natural insulation, making it ideal for colder climates. Our thermal tops and bottoms are designed to be worn as a first layer, keeping you warm and dry no matter the weather.

Why choose Undiemeister thermal underwear?

Undiemeister strives for premium quality and sustainability in every collection. Our experience with sustainable materials like bamboo has helped us develop an even better alternative with Mellowood®. Our thermal underwear stands out with its perfect balance of comfort, warmth, and eco-friendliness.

The benefits of TENCEL™ in thermal underwear

TENCEL™ fibres, made from sustainably sourced beechwood, are known for their breathability and moisture-wicking properties. They ensure you stay dry even during physical activities. TENCEL™ helps to naturally regulate body temperature, making it an excellent choice for thermal underwear.

Organic cotton for added softness and warmth

In addition to TENCEL™, Mellowood® contains 28% organic cotton. This adds softness and extra insulating properties to our thermal underwear. Organic cotton is produced without harmful chemicals, making it a responsible choice that is good for both you and the environment.

Elastane for flexibility and comfort

Elastane provides the necessary stretch in our thermal underwear. With just 4% elastane, Mellowood® retains its shape and adapts to your body. This makes our thermal underwear not only warm but also extremely comfortable, even during the most demanding activities.

Different styles and colours for every moment

Undiemeister offers thermal underwear in various styles and colours, so you can always find the right choice for your needs. From neutral tones to darker shades that are easy to mix and match, our range suits any style and occasion.

Thermal tops and bottoms: the perfect combination for warmth

Our range of thermal underwear includes both tops and bottoms, designed for an ideal layering system. By combining a thermal top with bottoms, you create a complete, warm base layer that protects against the cold and moisture. Our garments are designed for long-term use and retain their quality even after many washes.

Undiemeister: the choice for premium men's essentials

At Undiemeister, everything revolves around quality, comfort, and sustainability. Our thermal underwear combines these three aspects into a stylish and eco-friendly product. By choosing Undiemeister, you opt for a brand that represents responsible fashion and durable men's essentials.

Thermal underwear for the conscious man

Choose Undiemeister if you’re looking for sustainable and comfortable thermal underwear. Our Mellowood® fabric offers warmth, breathability, and a responsible choice for colder days. Make a conscious decision for your wardrobe with Undiemeister thermal underwear.

The Undiemeister® range

Essential T-shirts for comfort and style

Regular Fit T-shirts
The perfect regular fit T-shirt (Casual T-shirt) for every day. Available in a variety of unique, natural colours at Undiemeister.

Slim Fit T-shirts
Slim Fit T-shirts are also part of Undiemeister's T-shirt range. The perfect undershirt for Meisters. With a crew neck, V-neck or even deep V-neck in different colours.

Tank tops
Comfortable and sporty, these are Undiemeister's tank tops. Available in three popular colours.

Long Sleeve T-shirts
The perfect undershirt for winter. Discover Undiemeister's long sleeve T-shirts, now available in two essential colours with a round and a V-neck.

Essentials for every day

Underwear
Undiemeister is known for its underwear. Made from patented Mellowood®, Undiemeister's underwear is available in different colours and in four different styles. Boxer briefs, loose fit boxer shorts, trunks and briefs in your favourite colours for men and boys' boxer briefs for the little Meisters!

Socks
You need socks every day, and top-quality socks can be found at Undiemeister. Whether you are looking for dress socks, sneaker socks or footies, you will find them here. Available in four stylish colours and from sizes 35-49.

Essentials for Meisters

Polos
Polos are available in five beautiful colours. Discover Undiemeister's premium polos and score your new favourite polo for summer.

Swim shorts
Quick-drying
swim shorts, equipped with two side pockets, including a zip pocket for valuables. High-quality cords for extra security and available in six summery colours. Made from recycled materials!