Bam Klein Sofa by Xie Fengcou is a highly esteemed winner of the very prestigious 2026 A' Design Award Tambaga in Desain Furnitur Competition Category.

TambagaFurnitur· 2026

Bam Klein Sofa

by Xie Fengcou

Client: Lionhan Home Design Co.,Ltd.

A' Design Award Tambaga Winner in Furnitur Category

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Verified Award Winner

Verify Award Status for #181694

View at A' Design Award Press Release Award Badge

Colors

The Design

About Bam Klein Sofa

Bam Klein iyanaritu sofa iya nala inspirasi pole ri bentu' topologina botolo' Klein. Onrong tudangenna, sandaranna sibawa onrong taddettekenna limanna riyebbu selaku seddi permukaan malengko matteru-teru, jaji pabbedana lalenna sibawa saliwenna biasae ripaddeni. Rangka ri lalenna napasseddiwi aju rijama sibawa bessi ripakkasse', na bantala' busa matinggi daya lentu'na sibawa pallapi kaeng mabbereangngi sokongeng ergonomis. Ajena bessi macella-lotong risalut powder iya mapipie mabbereangngi tappa maringeng ri sofae sibawa mappatette'i strukturna. Pakkebbu iya seddie bageang bawang napakurangngi tekanan ri passisumpungenna sibawa napalebbii atahangenna.

The Recognition

About the A' Design Award Tambaga

Bam Klein Sofa iyanaritu pakoro A' Design Award Tambaga, pakalebbi iya malompo tongeng iya ripabbere ri desain luar biasa iya riissengngi nasaba kreativitas, kecerdikan sibawa ketajaman. Pakoro Tambaga iyanaritu artefak iya terampil sibawa mappabbura kreatif iya mappabbentuk pengalaman iya maega, imajinasi sibawa kecerdikan tau mabbuat. Bam Klein Sofa ripakkirangngi mancaji objek iya ripakalebbi, ripuji sibawa rirennu, profesional sibawa inovatif. Desain pakoro A' Design Award Tambaga iyae mappasilaong praktik tepat ri seni, sains, desain sibawa teknologi sibawa makessing nasaba perhatiannna ri detail. Bam Klein Sofa mappabbura kebutuhan makessing, mappakkela keinginan, mappabbentuk perasaan sibawa mappabbura rasa penasaran.

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.