Free shipping from 499 DKK │ 30 days return policy


The Perfect Undershirt


Danish design. Invisible. Seamless. Tailored fit. Silky Soft. Sustainable.

At Seamless CPH we make the best possible high-quality undershirt. To do that, only the best material will work –  TENCEL™. This new fabric is developed and produced by Lenzing in Switzerland and is awarded several prizes for their sustainable production. To honour the material, which is derived from renewable wood sources, we have named our undershirts after wood types that have a similar colour to the individual undershirts: Oak, Cedar and Mahogany.

With its Danish design and tailored fit – the fact that the undershirt, due to the combination of 96% TENCEL and the remainder being elastane,  suits every body type as if it was custom tailored – makes it a pioneer within the industry that is mens fashion.

The undershirt is highly breathable and has a cooling effect due to the moisture management system that helps regulate your body temperature. The dry effect in the undershirt will help to keep you dry all day by absorbing and transporting sweat like sportswear. Our undershirts are made in a seamless design to limit the visibility of the undershirt through white and blue shirts, polos and other t-shirts. We ship free of charge to Denmark on orders above 499 DKK.


Material: TENCEL: 96%, Elastane: 4%

The TENCEL fibers originate from renewable raw wood materials and are certified as compostable and biodegradable, and thus can fully revert back to nature.

The fabric is anti-bacterial particularly on three of the odour-relevant bacteria types tested, (Staphylococcus epidermidis, Pseudomonas aeruginosa, Escherichia coli), a significantly lower growth rate was observed on TENCEL™ compared to cotton and polyester.

See our Care Guide for more information

Weight: 160gr.

Collar: Rounded v-neck

Feel: Unrestricted freedom of movement

Sleeve: Short-sleeved

Form: Tailored, tight fit.
The XL size will fit you even if your normal t-shirts are two sizes larger than XL due to the stretchy fabric. Try it out – if we are wrong we will make sure your return is free of charge. If you have questions about the fit please reach out or read our Size Guide. 

Bare Oak: 190cm and 0,1 ton wearing XL (will fit +100kg and tall people)
Calm Cedar: 186cm and 85 kg wearing M (depending on weight, fitness and personal preference the size L is also an option)
Royal Mahogany: 185cm and 84 kg wearing M

Colour: three skin tones from light to dark. If you need assistance in finding the right colour feel free to reach out.

Shipping & returns

Our courier partners include DAO, GLS, and PostNord.

We provide free shipping from 499 DKK.

We have by default added a 50DKK discount on all orders outside DK to decrease the shipping price. Please reach out if you have questions.

We trust our product 100% and therefore we provide free returns in DK.

We ship within 1 business day from Monday-Friday.

Size Guide - Seamless CPH
Select undershirt

Choose the undershirt that suits your skin tone and place your order

order handling

We will handle your order as quickly as possible and ship within 1 business day


Shipping to Denmark is free on orders above 499 DKK

100% satisfaction

We trust our products 100% and therefore offer free returns in DK within 30 days

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