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MERCERIZED COTTON®

Eterna Longsleeve Navy

€121,95

Size

Variant

Hand-Finished In Italy
Trusted Worldwide
Unmatched Value-for-Money
30-Day Returns

Description

A tailored long-sleeve tee shaped with a clean, structured line. Crafted from premium 240 GSM mercerized cotton, the surface is smooth with a subtle natural sheen and controlled density. The silhouette falls with measured precision through the body and sleeves, maintaining balanced proportion without excess drape. The substantial fabric weight supports durability while preserving form through repeated wear.

Fabric: Premium 240 GSM mercerized cotton
Fit: Tailored fit
Details: Long sleeves, structured silhouette, smooth mercerized finish

Colours: Navy
Available sizes: XS, S, M, L, XL, 2XL

Shipping & Returns

Orders are processed within 1–3 business days.
Delivery within Europe takes 5–7 business days, with Premium Shipping arriving up to 5 days faster.

All orders include Track & Trace service and are handled through a guaranteed, carefully managed delivery process.

Free Shipping on orders above €200 EUR.
Returns accepted within 30 days in original condition.

sizing

Designed with a close, architectural cut that emphasizes clean proportions.

For a more relaxed and balanced silhouette, we often advise selecting one size up.
For a sharper fit, your usual size will sit closer to the body.

Refer to the Size Guide above for precise measurements.

care

For lasting quality, we recommend hand-washing all pieces.
If using a machine, select the hand-wash program to avoid shrinking or damaging our premium materials.
Air dry only — never tumble.

payment options

We accept the following payment methods:

Visa
Mastercard
American Express
Maestro
Apple Pay
Google Pay
Bancontact
Ideal
UnionPay
Shop Pay

All transactions are processed securely through encrypted SSL technology, ensuring your information remains private and protected.

Reach out to Leonis Maretti at any time, we’re here to assist you.

Email: contact@leonismaretti.com

Size Guide

Eterna Longsleeve Navy

Selecting the right size online can be challenging. We provide detailed measurements and a quick size finder to help. Leonis Maretti garments are designed to fit true to size with a tailored, considered drape.

Find Your Size

Four quick questions. Your size in seconds.

01 / 04

Your height

02 / 04

Your weight

03 / 04

Your build

04 / 04

Your fit preference

Your recommended size

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Still uncertain? Our team is here to help — contact@leonismaretti.com

Compare Measurements

Compare these to a garment you already own.

Your measurements may not correspond exactly with the table. Choose the closest size to your measurements and the garment will fit well.

How to Measure

Still Not Sure?

Our team is happy to assist with size and fit advice. Reach us at contact@leonismaretti.com. Every order is covered by our 30-day no-questions-asked return policy.

Exclusive Offer

Bundle Savings

Additional discount when buying multiple items

10%

2 Items

15%

3 Items

Best Value

25%

5 Items

Dean Callahan Greenwich, USA

on Eterna Tee

Got the Eterna tee in three colors and they all look very clean. The fabric has a slight shine which makes it feel more elevated than normal cotton. easy to wear but still looks put together.

Oliver Grant Edinburgh, UK

on Eterna Tee

This is not a regular t-shirt. The mercerized cotton feels smooth and almost polished. It sits very clean on the body and keeps its shape. I’ve already ordered another one after the first.

Carlos Aguilar Polanco, MEX

on Eterna Longsleeve

really like this one. fabric feels soft and looks slightly glossy. just a very easy piece but still looks better than most tees I have.

Travis Grange Los Angeles, USA

on Eterna Polo

I wear these almost every day now. The finish on the fabric gives it that subtle luxury look without being too much. holds shape really well after washing too. definitely my favorite brand for essentials right now.

Tobias Engelhardt Cologne, GER

on Eterna Tee

The mercerized cotton has a very refined surface, smooth and slightly reflective in a good way. It makes even a simple t-shirt feel more intentional. The fit is balanced and consistent. This is how essentials should be made.

Omar Al-Rashid Khalifa City, UAE

on Eterna Polo

The fabric feels very refined and smooth. Slightly thinner than I expected but still holds structure well when worn. The finish gives it a more elevated look than normal polos. overall very good.

Kyle Sutton Chicago, USA

on Eterna Longsleeve

good fit, nice fabric. feels soft and looks clean. nothing complicated just works really well.

Stefano Gatti Portofino, IT

on Eterna Tee

The sheen of the fabric is very subtle but makes a big difference. It gives the shirt a more refined look than standard cotton. I've worn it several times and it still looks impeccable.

Claire D. Lyon, FR

on Eterna Tee

Bought this for my boyfriend and he ended up ordering more colors himself. He said the fabric feels smoother and more refined than his other t-shirts. It looks very clean on him.

Kenji Tanaka Osaka, JPN

on Eterna Tee

The texture is what stands out, very smooth with a slight sheen that catches light nicely. It feels minimal but still premium. Works for both casual and more dressed looks. I’ll definitely be getting more.

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THE LAFAYETTE BOUTIQUE

Architects of Clothing

We approach clothing with the discipline of architecture. Clean lines. Measured structure. Materials chosen for form and longevity.

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From Warm, Enduring Climates

In regions shaped by heat and time, cotton develops to its full length and strength. Chosen for purity, then mercerized for precision, it becomes smoother, denser, and defined by lasting structure.