Flexform

Adda Modular Sofa System

Name: Adda Modular Sofa System
Brand: Flexform
SKU: 10-001029
Availability: InStock

From £18,047

Estimated delivery time: 8 - 10 Weeks

A sculptural interpretation of comfort, the Adda modular sofa by Flexform introduces a low-slung architectural profile into open-plan living rooms and contemporary lounge compositions. Designed by Antonio Citterio, it rests on a sleek metal base with exposed cast-aluminium feet, while tailored topstitching gently creases the upholstery—balancing formality with lived-in softness.

Generously filled with goose down, each module is fully upholstered in fabric or leather and joined by a discreet bayonet coupling system for seamless reconfiguration. Adda reflects Flexform’s mastery of modular seating—where visual clarity, artisanal detailing, and adaptable construction converge in a quietly commanding statement of Italian design.

Made in Italy

This piece is made to order in Italy.

Estimated delivery from order date:

United Kingdom: 8 - 10 weeks.
International: 10 - 12 weeks.

Timeframes are estimates and depend on shipping location. Your confirmed delivery window will be shared by email within 10 days of order confirmation.

Client Advisers are available Monday to Friday, 9am–5pm (GMT) for guidance on specifications or delivery planning.

Made-to-order policy: this piece is produced specifically for you and cannot be cancelled or returned.

MATERIALS & DETAILS

The upholstery is removable, available in both fabric and leather versions for versatile styling.

The structure is crafted from metal with a soft topper in polyurethane foam, covered with a protective laminated fabric for durability.

The seat cushions are filled with sterilised goose down (Assopiuma certified, gold label), with an insert in crushproof, variable-density material for lasting comfort.

The backrest is made from metal, with moulded polyurethane padding and sterilised goose down (Assopiuma certified, gold label) for a luxurious feel.

The armrests are metal, featuring moulded polyurethane padding and sterilised goose down (Assopiuma certified, gold label) for consistent comfort.

The backrest cushions are filled with sterilised goose down (Assopiuma certified, gold label) for additional luxury.

The feet are cast aluminium, available in satin, chrome, black chrome, burnished, glossy anthracite, and matt titanium 710 finishes. The feet rest on pads made from thermoplastic material for added protection.

DESIGNER

Antonio Citterio

Meet the Designer

Antonio Citterio

Antonio Citterio brings an architect’s discipline to furniture design—where proportion, material integrity, and technical precision converge. Known for his long-standing collaborations with Flexform, Citterio’s work embodies a quiet modernism that balances industrial innovation with refined spatial harmony.

Browse the Antonio Citterio collection →

Antonio-Citterio-Designer-Image-Product-Banner

Browse the Antonio Citterio collection →

Meet the Maker

Flexform

Based in Meda and led by the Galimberti family since the 1960s, Flexform is an Italian maker defined by quiet architecture and refined upholstery. Each piece is crafted in its Meda atelier, where proportion, comfort, and material clarity are resolved with studied precision—resulting in modular seating and sculptural forms that transcend fashion and reward long-term living.

Discover the Flexform story →