Bam Klein Sofa by Xie Fengcou is a highly esteemed winner of the very prestigious 2026 A' Design Award Keleawe in Hoʻolālā Lako Hale Competition Category.

KeleaweLako Hale· 2026

Bam Klein Sofa

by Xie Fengcou

Client: Lionhan Home Design Co.,Ltd.

A' Design Award Keleawe Winner in Lako Hale 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

He sofa ʻo Bam Klein i hoʻoulu ʻia e ke ʻano topolohia o ka ʻōmole Klein. Ua hana ʻia ka noho, ke kua a me nā hilinaʻi lima ma ke ʻano he ʻili pihaʻū hoʻokahi e hoʻomau ana, no laila ua hoʻopau ʻia ka ʻokoʻa maʻamau ma waena o loko a me waho. Hoʻohui ka iwi kūkulu o loko i ka lāʻau ʻenekinia a me ke kila hoʻoikaika ʻia, a hāʻawi nā uluna foam pahoehoe kiʻekiʻe a me ka uhi lole i ke kākoʻo ergonomic. Hāʻawi nā wāwae kila lahilahi ʻeleʻele i uhi ʻia me ka pauka i ka helehelena māmā o ka sofa a mālama i ke kūpaʻa o ke kūkulu ʻana. Hōʻemi ke kūkulu ʻana ma ka ʻāpana hoʻokahi i ke koʻikoʻi o nā hui a hoʻomaikaʻi i ka lōʻihi o ka hoʻohana ʻana.

The Recognition

About the A' Design Award Keleawe

Ua lanakila ka hoʻolālā Bam Klein Sofa i ka A' Design Award Keleawe, he ʻike hoʻohanohano nui loa i hāʻawi ʻia i nā hoʻolālā kūʻokoʻa i ʻike ʻia ma o ka hana noʻeau, ka akamai a me ka makakoho. He mau hana mākaukau a hana noʻeau kupaianaha nā lanakila Keleawe e hōʻoia ana i ka ʻike nui, ka noʻonoʻo a me ka maʻalea o kā lākou poʻe hoʻolālā. Manaʻo ʻia ʻo ka hoʻolālā Bam Klein Sofa he mea i mahalo nui ʻia, hoʻohiwahiwa ʻia a aloha ʻia, he ʻoihana a hou loa. ʻO kēia hoʻolālā i lanakila i ka A' Design Award Keleawe e hoʻohui ana i nā hana maikaʻi loa o ka hana noʻeau, ka ʻepekema, ka hoʻolālā a me ka ʻenehana, a maikaʻi no kona nānā ʻana i nā kikoʻī. Hoʻokō maikaʻi ka hoʻolālā Bam Klein Sofa i nā pono, hoʻopā i ka makemake, hoʻohiwahiwa i nā manaʻo a huki i ka makemake e ʻike.

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.