Bam Klein Sofá by Xie Fengcou is a highly esteemed winner of the very prestigious 2026 A' Design Award de Bronce in Diseño de Mobiliario Competition Category.

BronceMobiliario· 2026

Bam Klein Sofá

by Xie Fengcou

Client: Lionhan Home Design Co.,Ltd.

A' Design Award de Bronce Winner in Mobiliario Category

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Verified Award Winner

Verify Award Status for #181694

View at A' Design Award Press Release Award Badge

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The Design

About Bam Klein Sofá

Bam Klein es un sofá inspirado en la forma topológica de la botella de Klein. El asiento, el respaldo y los reposabrazos se configuran como una única superficie curva continua, de modo que se elimina la distinción habitual entre interior y exterior. La estructura interna combina madera de ingeniería y acero reforzado, mientras que los cojines de espuma de alta resiliencia y la tapicería textil aportan un soporte ergonómico. Unas esbeltas patas de acero con recubrimiento en polvo negro confieren al sofá una apariencia ligera y mantienen la estabilidad de la estructura. La construcción en una sola pieza reduce la tensión en las uniones y mejora la durabilidad.

The Recognition

About the A' Design Award de Bronce

Bam Klein Sofá ha ganado el A' Design Award de Bronce, un reconocimiento sumamente prestigioso concedido a diseños sobresalientes que se distinguen por su creatividad, ingenio y astucia. Los ganadores de Bronce son artefactos ampliamente hábiles y sorprendentemente creativos que acreditan la vasta experiencia, imaginación e ingeniosidad de sus diseñadores. Se espera que Bam Klein Sofá sea un objeto muy apreciado, admirado y querido, notablemente profesional e innovador. Este diseño ganador del A' Design Award de Bronce incorpora las mejores prácticas del arte, la ciencia, el diseño y la tecnología, y es excelente por su atención al detalle. Bam Klein Sofá satisface espléndidamente las necesidades, toca los deseos, encanta los sentimientos y atrae la curiosidad.

Behind the Design

Press Kit

Credits, team members and technical details provided by the designer.

Unique Properties: This project reinterprets the topological Klein bottle into a continuous one-piece curved surface that merges backrest and armrests. The seamless geometry eliminates conventional interior exterior distinctions, redefining furniture boundaries. Its lightweight visual presence, slender metal legs, ergonomic curvature, and structurally balanced framework integrate conceptual innovation with functional stability and refined contemporary aesthetics.
Dimensions & Packaging: This project measures 2400 mm, 950 mm, 720 mm with a seat height of 420 mm and leg height of 180 mm. Its frame combines engineered wood and reinforced steel, cushions are high-resilience foam, and upholstery is premium fabric. Weighing approximately 85 kg with a 300 kg load capacity, it is packaged in protective wrap and reinforced export cartons for safe delivery.
Tags: Topological Design, Klein Bottle Inspiration, Sculptural Sofa, Continuous Surface, Contemporary Furniture, Ergonomic Innovation, Lightweight Structure, Interdisciplinary Design, Modern Living
Production Technology: The sofa utilizes precision-molded internal framing to achieve a continuous curved profile. High-resilience polyurethane foam ensures ergonomic support, while premium upholstery enhances tactile comfort. Slender black powder-coated steel legs provide structural reinforcement. The monolithic construction minimizes joint stress, improving durability and load distribution while maintaining formal fluidity.
Design Challenge: The primary challenge was transforming a mathematically infinite surface into a manufacturable and stable structure. Balancing visual lightness with structural integrity required advanced internal framing solutions. Production constraints, material flexibility limits, and ergonomic validation posed technical obstacles. The breakthrough lay in integrating topology, engineering logic, and human comfort within a feasible industrial system.
Research: This interdisciplinary research translated topological concepts into ergonomic furniture using geometry analysis, parametric modeling, Cad prototyping, and comfort testing. User trials validated curvature support and structural balance, demonstrating that mathematical abstraction can enhance both comfort and aesthetic appeal, providing insights that influence contemporary furniture design and commercial differentiation.
Inspiration: The design draws inspiration from the Klein bottle's infinite surface, where inside and outside merge into a continuous entity. This topological paradox inspired an exploration of spatial continuity in furniture. Motivated by interdisciplinary integration between mathematics and product design, the project transforms abstract geometry into ergonomic form, redefining how the human body engages with domestic space.
Project Duration: The project started in April 2025 and finished in August 2025 in China.
Operation Flow: Users interact intuitively by sitting or reclining along the continuous curved surface. The form gently supports the back and arms without rigid edges, encouraging relaxed postures. Elevated by slender legs, the sofa appears light while remaining stable. Its unified structure allows the body to feel embraced yet unrestricted, enhancing comfort and spatial openness.
Image Credits: Image #1: Photographer Xie Fengcou, Bam Klein, 2025.
Image #2: Photographer Xie Fengcou, Bam Klein, 2025.
Image #3: Photographer Xie Fengcou, Bam Klein, 2025.
Image #4: Photographer Xie Fengcou, Bam Klein, 2025.
Image #5: Photographer Xie Fengcou, Bam Klein, 2025.