This modular collection of seats and sofas designed by London studio Barber and Osgerby for outdoor furniture brand Dedon features removable upholstered cushions that slip over a metal frame.

The Brea outdoor lounge system is the second collection that the studio headed by Edward Barber and Jay Osgerby has designed for German firm Dedon, following on from a range of teak seating and tables launched in 2017.

The modular furniture system comprises different seating options featuring stainless-steel frames that support the upholstered elements.

A sequence of metal loops create bases for the single-seater, two-seater and three-seater modules.

The modules can be assembled to form numerous configurations with different options for positioning a tubular armrest and backrest. Seat cushions are supported by tensioned webbing that stretches across the metal frames.

The design's unique feature is a pocket sewn into the upholstered cushions that enables them to slip over the looped backrests and side rests. The system fixes the cushions in place while allowing them to be easily removed if required.

Barber and Osgerby suggested that the Brea system was designed "to look beautiful even without any cushions". All of the materials used in the furniture's construction are suitable for both internal and external use.

The simplicity of the design and the components is intended to streamline manufacturing and storage of the furniture, whilst maintaining high aesthetic standards and comfort levels.

"Each piece has been designed with the objective of reducing complexity and caring for every detail – from the design of the universal castings to the comfort of the cushions and upholstery," claimed its creators.

"The design has increased the efficiency of the warehouse supply chain, delivery and assembly."

Brea features in the furniture design category of the longlist for the Dezeen Awards 2019, alongside a system of collapsible furniture that can be hung on a wall like a picture, and a dining table and bench that is inspired by traditional picnic benches.

The collection also includes side tables and coffee tables that complement the seating. The result is a versatile and adaptable system that can be configured in numerous ways for use in different contexts.

Barber and Osgerby's previous projects include a collection of tables with enamel tops that can also be used indoors or outdoors, and a stacking chair made from a specially developed plastic that can be endlessly recycled.

Edward Barber and Jay Osgerby founded their eponymous studio in London in 1996. They are best known for industrial design projects such as their Tip Ton chair for Vitra and the design of the London 2012 Olympic Torch.

The designers work across all scales of design projects, including architecture and interiors, product design, lighting and digital experiences. In 2018 they announced the sale of a majority stake in two separate design businesses they founded to digital agency AKQA.