David Kaltenbach

Imagine a sofa built to withstand any environment on Earth. Whether atop a snow-covered mountain, under the scorching desert sun, deep in a tropical jungle, or floating on the open ocean.

This is the Special-Ops sofa, designed to thrive by David Kaltenbach and Reidar Mester for those who value reliability, comfort, and performance, no matter where life takes them. Even if it’s just your living room.

(2025 / Product Design: David Kaltenbach & Reidar Mester / Photography: Phillip Koll / Graphic Design: Conversation.taking.place)

3D printed high heel in collaboration with STANDARDCLOTHING. (2017 / Creative direction: Nam Nguyen / Art direction: Fred Heinsohn / Photography: Phillip Koll + Joseph Kadow / My service: Product design)

Portable lithium battery for outdoor use + Bronson Outdoor CI. (2020 / @Studio Boost, Partner: Lucas Rex, Maximilian Mahal / Photography: Phillip Koll / My service: Product design + Art direction with Fred Heinsohn)

DIN normed lithium battery specifically for boats, RVs and off-grid homes. (2022 / @Studio Boost, Partner: Shao Hsuan-Yu, Maximilian Mahal / CGI: Mattis Obermann / My service: Product design + Art direction)

Collaborated with Ottobock on an FnD project to develop a wristband that turns a prosthesis into an intuitive computer control. (2018 / @Studio Boost, Partner: Lucas Rex, Maximilian Mahal / CGI: Mattis Obermann / My service: Product + Interaction design)

DIY paper animals and the corresponding CI for my nephew Anton. (2023 / Photography: Phillip Koll / My service: Product + Art direction)

Wax Candles, Smiley 3D printed, cast into a silicone mould. (2022 / My service: Product design + Photography)

Design of a phone booth for Berlin Acoustics Group. (2023 / @Studio Boost, My service: Product design)

Design of a acoustic panel for mute-labs. (2023 / @Studio Boost, My service: Product design)

Design of a phone booth and user manual. (2019 / @Studio Boost, My service: Product + Art direction)

Bench and Stool design for mute-labs. (2019 / @Studio Boost, Partner: Lucas Rex, Maximilian Mahal / Photography: Phillip Koll/ My service: Product design)

Imagine a sofa built to withstand any environment on Earth. Whether atop a snow-covered mountain, under the scorching desert sun, deep in a tropical jungle, or floating on the open ocean. This is the Special-Ops sofa, designed to thrive by David Kaltenbach and Reidar Mester for those who value reliability, comfort, and performance, no matter where life takes them. Even if it’s just your living room.