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Xie Fengcou's Bam Klein Sofa presents a sculptural meditation on contemporary domestic furniture wherein the elongated horizontal format spanning approximately eight to nine feet in length establishes
Xie Fengcou's Bam Klein Sofa presents a masterfully resolved exercise in contemporary furniture design that demonstrates sophisticated formal intelligence and material refinement, positioned within la
Xie Fengcou's Bam Klein Sofa presents a striking volumetric exercise in contemporary furniture design, rendered in a three-quarter perspective against a pristine neutral ground that amplifies the form
Rendered in a sophisticated palette dominated by warm putty, greige, and soft taupe tonalities suggesting natural linen or refined felted wool, Xie Fengcou's Bam Klein Sofa presents a sculptural study
Xie Fengcou's Bam Klein Sofa presents a sculptural furniture composition photographed against a pristine white background, establishing an isolated tableau that emphasizes the piece's formal qualities

Lionhan Home Design Co.,Ltd.

Bronze Furniture Design · 2026

Bam Klein Sofa

by Xie Fengcou

  • A' Design Award 2026 Bronze Winner in Furniture Design
  • Awarded April 15, 2026
  • CLIENT: Lionhan Home Design Co.,Ltd.
  • Estimated Number of Design Views: 5,511
  • Verification code D5D58DF7DE · Verify this award
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About Bam Klein Sofa

Bam Klein is a sofa inspired by the topological form of the Klein bottle. The seat, backrest and armrests are shaped as one continuous curved surface, so the usual distinction between inside and outside is removed. The internal frame combines engineered wood and reinforced steel, while high resilience foam cushions and fabric upholstery provide ergonomic support. Slender black powder coated steel legs give the sofa a light appearance and keep the structure stable. The single piece construction reduces joint stress and improves durability.

Xie Fengcou's Bam Klein Sofa engages contemporary furniture design discourse through a considered exploration of sculptural form meeting functional necessity within the domestic environment, positioning itself within a rich lineage of twentieth and twenty-first century investigations into how seating furniture might transcend utilitarian purpose to achieve aesthetic presence as designed objects worthy of sustained visual contemplation. The work demonstrates sophisticated resolution of multiple formal challenges inherent to contemporary sofa design wherein the imperative for comfortable human-scale seating must harmonize with desires for visual elegance, spatial efficiency, and sculptural distinction within residential interiors increasingly conceived as curated environments rather than merely functional spaces. The compositional achievement manifests most evidently in the bold horizontal extension paired with restrained vertical dimension, a proportional decision that creates dramatic presence without overwhelming modest-scale rooms while simultaneously establishing the piece as a defining architectural element capable of organizing spatial flow and establishing zones within open-plan living areas. The chromatic accomplishment reveals particular sophistication through the deployment of warm neutral tones that neither recede into background anonymity nor advance with aggressive chromatic assertion, occupying instead a middle register that reads as substantial yet accommodating, anchored through strategic placement of darker accent cushions that prevent tonal drift toward blandness while maintaining overall atmospheric serenity. Technical facility evidences throughout the execution, particularly in the sculptural resolution of the curved armrest forms that appear as continuous volumetric sweeps suggesting considerable structural engineering beneath their soft upholstered surfaces, these elements requiring precise calculation of internal framework dimensions, padding distribution, and fabric tensioning to achieve their apparent effortless organic grace. The integration of base supports demonstrates thoughtful consideration of visual lightness through material reduction, wherein slender dark supports positioned discretely beneath each seating module create sufficient structural stability while maintaining minimal visual intrusion, allowing the cushioned volumes above to read as hovering elements that defy gravitational expectations typically associated with substantial upholstered furniture. Surface treatment across all upholstered passages suggests accomplished craftsmanship in textile selection and application wherein fabric grain aligns consistently, seams resolve with minimal visibility, corner transitions curve smoothly without puckering or distortion, and overall tautness conveys quality construction and attention to finish details that distinguish refined furniture from mass-market alternatives. The work invites contemplation of how contemporary domestic objects negotiate between multiple value systems simultaneously, serving functional requirements for comfortable seating while projecting cultural capital through design sophistication, material quality, and aesthetic distinction, operating within domestic spaces as both utilitarian infrastructure and symbolic communication of inhabitant sensibility and cultural literacy regarding design history and contemporary aesthetic discourse. One might observe how the piece's generous horizontal scale suggests communal use and social gathering while its modular division into distinct seating zones accommodates individual occupation, this formal duality reflecting broader cultural negotiations between togetherness and autonomy within domestic life. The organic curved armrest forms that embrace and define the seating envelope suggest protection and comfort, perhaps evoking archetypal associations with embrace gestures or sheltering enclosure, while their sculptural presence simultaneously asserts aesthetic intentionality that elevates everyday sitting into designed experience worthy of attention. How might this furniture piece transform spatial perception within its intended environment, and what narrative does its formal vocabulary propose regarding contemporary values surrounding domestic comfort, aesthetic refinement, and the role of designed objects in constructing lived experience within residential interiors that increasingly function as stages for identity performance and cultural expression?

Press Kit

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.
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.
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.
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.

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