Collection: T-shirt long sleeves

T-shirt with long sleeves from Undiemeister

Whether you head out early in the morning, work in changing temperatures or simply love subtle style: the long-sleeved T-shirt is your go-to basic with more substance.

Undiemeister's long-sleeve T-shirt is designed for those who cleverly combine: the softness of an undershirt, the look of a casual T-shirt top and the technology of high-performance fibers.

Comfortable in every season. Fresh, elegant and designed with precision.

Why choose a longsleeve T-shirt?

A longsleeve T-shirt is a versatile essential. You wear it as an extra layer on cooler days, as a solo shirt in spring and fall, or as a comfortable style choice at home and when traveling.

What sets our T-shirt long sleeves apart:

• Silky smooth feel thanks to Mellowood
• Slim fit without pinching
• Breathable and temperature regulating in any climate
• Subtle look, suitable for casual and semi-formal

And of course: sustainably produced in Europe, with care for people and the environment.

Mellowood provides comfort that you feel, quality that stays

Our longsleeves are made from a unique blend: 68% TENCEL™ Modal, 28% organic cotton and 4% elastane.

This composition provides:

• Silky soft feel, even after dozens of washes
• High breathability - warm and airy at the same time
• Hypoallergenic properties for sensitive skin
• Colour fastness and shape retention

A T-shirt that feels like luxury and performs as it should.

Breathable and temperature-regulating from morning to night

This T-shirt keeps your body temperature stable, wicks away moisture quickly and stays dry to the touch, even during exercise. It wears light and lets you move freely, from coffee moment to meeting and from walk to home work day.

Invisible comfort you can count on every day.

T-shirt long sleeves in stylish design

Undiemeister's longsleeves are available in a round neck or V-neck. You choose from subtle colours like Chalk White and Volcano Ash. Thanks to the slim fit, the T-shirt fits nicely - available in sizes from S to XXXL.

Perfect to combine with our boxer briefs or socks. Wear it loose, under a cardigan or as a layer under your jacket. This longsleeve adapts effortlessly to you and your day.

Sustainability as standard

Our production is based on careful choices:

• TENCEL™ Modal from FSC-certified wood
• Organic cotton of controlled origin
• CO₂-neutral production within Europe
• Plastic-free, recyclable packaging

All with one goal: longevity and minimal impact.

Bundles & sets - smartly chosen, stylishly delivered

Our T-shirlong sleeves are available in singles, ideal for introductions or additions and in 3-packs or 6-packs for extra discounts.

One purchase, multiple days of comfort.

Order your favorite layer today, all year round

• Mellowood: 68% TENCEL™ Modal, 28% organic cotton, 4% elastane
• Silky soft, breathable and form-fitting
• Slim Fit fit in stylish colours
• Sustainably produced in Europe
• Available in Meisterdeals or singular pieces

Long in sleeve and in style

Undiemeister's T-shirts with long sleeves are more than just a layer: they're a smart choice for comfort, style and durability in any situation. Whatever you undertake - this shirt supports your movement, regulates your temperature and keeps you looking groomed.

Comfort in technology. Style in simplicity. Durability in every thread.