Smooth and grained leather briefcase
ISACK - NAVY

$750.00
Final price — duties and taxes included
Nous produisons en séries limitées.
Lorsque ce sac est épuisé, seule la précommande permet d’y accéder. En le réservant aujourd’hui, vous êtes assuré de le recevoir dès le 14 octobre 2026.
En savoir plus sur la précommande →
We produce in limited series.
When this bag is sold out, pre-ordering is the only way to access it. By reserving yours today, you are guaranteed delivery from October 14 2026.
Learn more about pre-ordering →
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Pourquoi proposer la précommande ?

Chez lundi, chaque sac est fabriqué en quantité volontairement limitée. Nous produisons au plus juste, pour éviter la surproduction et préserver un haut niveau d’exigence sur les matières et les finitions.

Lorsqu’un modèle est épuisé, la précommande permet de réserver votre pièce à l’avance, avant la prochaine production.

En le réservant aujourd’hui, vous êtes assuré de le recevoir dès le 14 octobre 2026.

Why pre-order?

At lundi, each bag is produced in intentionally limited quantities. We manufacture only what is needed, avoiding overproduction while maintaining a high level of quality.

When a model is sold out, pre-ordering allows you to secure your piece in advance.

By reserving yours today, you are guaranteed delivery from October 14 2026.

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Colors
This model features a rear trolley sleeve.
Fits a laptop
up to 16 inches.
Description

ISACK Navy — Controlled depth

In its Navy version, the ISACK briefcase takes on a deep tone, almost black. A dense, subtle blue that reveals its nuance in the light — and delivers understated elegance.

The front and back panels in smooth navy leather create a clean, uniform, structured surface. The sides in grained navy leather add texture and reinforce the areas exposed to daily movement. Together, the two leathers form a discreet interplay of materials — noticeable up close — that highlights the precision of the design.

Navy has a rare quality: it gives the silhouette the sobriety of black, while retaining greater depth.

Compact and perfectly organised

ISACK Navy keeps a streamlined format designed to follow your daily rhythm without visual bulk. Despite its compact profile, it fits 13" to 16" laptops.

The Alcantara interior keeps essentials clearly arranged: laptop, documents, notebook, charger. An intuitive layout, with no compromise on space.

An efficient briefcase, built for fast-paced days.

Consistent, lasting details

Brass hardware subtly contrasts with the depth of navy, adding a controlled touch of light. Protective base feet help preserve the leather when the bag is set down, maintaining its structure over time.

Carry it by hand or wear it on the shoulder

Delivered with an included shoulder strap, ISACK Navy can be carried by hand for a clean, structured look, or worn crossbody for greater freedom.

Understated. Deep. Essential.
A work companion designed to last.

Dimensions
  • Exterior dimensions: 39.0 × 28.0 × 6.5 cm
  • Laptop compartment fits up to 16"
Interior organization
  • An interior storage volume of approximately 6 liters.
  • A padded laptop sleeve, sized to accommodate a 13- to 16-inch laptop (maximum laptop length: 36 cm).
  • An interior zippered pocket (25 x 20 cm) to hold your most confidential documents.
  • A flat pocket (15 x 15 cm) for a phone and/or external battery.
  • A gusseted pocket (17.5 x 20 x 3.5 cm) for your cables and charger, with a leather tab to hold the plug in place.
  • Two pockets for your business cards (7 x 7.5 cm).
  • An external zippered pocket (13 x 10 cm) for passport/ID.
Materials
  • Main material: Smooth semi-vegetable tanned leather
  • Secondary material: Semi-vegetable tanned grained leather
  • Alcantara lining: soft to the touch and easy to maintain
  • Recycled felt under the shoulder strap.
  • Metal zippers: RIRI - Made in Switzerland.
  • Brass metal accessories

We carefully select our materials for their durability, longevity, and ability to stand up to everyday use. Each leather is sourced from trusted partners with strong commitments.

Learn more about our materials

2-year warranty
Free returns within 14 days
Taxes and customs
fees included
Payment in 3 installments
with no fees

Customize your briefcase

You can engrave your initials, first name, or any other details on a zipper pull or shoulder strap of your product. Send us an email—lundi.contact@gmail.com—before or after your purchase, and we will send you some simulations.

learn more
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A rigorous selection of full-grain leathers

Smooth Leather

This full-grain leather has been tanned using vegetable-based products. The finish of this leather is therefore very natural. It has a smooth, matte appearance and will develop a beautiful patina over time. This leather requires minimal maintenance to ensure a very long life.

Grained Leather

The main characteristic of this leather is its suppleness. It has a matte, natural appearance and will develop a patina over time thanks to its organic tanning process.

Saffiano Leather

This full-grain leather has a satin finish that gives it a slight sheen. Its surface coating makes it particularly resistant to everyday wear and tear. This leather requires very little maintenance.

Metal Accessories

Most of our metal accessories are made of brass. This metal offers excellent strength and corrosion resistance. These characteristics are essential, particularly for carabiners and ground nails.

Water-repellent cotton fabric

This twill-woven cotton fabric is very elegant and pairs beautifully with our smooth leather. It has been treated to be water-repellent, making it resistant to stains and splashes: water rolls off the surface without penetrating.