COSI Bench

The COSI Benches are a contemporary family of outdoor benches defined by clean, architectural lines in corten steel and mahogany, designed by Cobe Arkitekter for robust, low‑maintenance performance in public spaces. The range includes free‑standing benches in 2000 and 3000 mm, a 2/3‑back variant for mixed seating postures, a full park bench with back, wall‑mounted benches and benches configured for concrete bases. The rust‑red corten surfaces develop a protective patina and the square timber slats are rounded at touch points for comfort, combining durability with a warm, tactile finish.

COSI is a bench family created by Danish architects Cobe Arkitekter to bring a modern, sculptural identity to the public realm with minimal upkeep and long service life. The design uses corten steel for primary structural surfaces—intentionally rusting to a stable, protective patina after a few months outdoors—paired with mahogany slats that can be left to silver naturally or maintained with oil to retain their warm tone. This palette delivers a maintenance‑free steel envelope, vandal‑resistance and comfortable user contact surfaces that suit parks, waterfronts, campuses, residential landscapes and civic squares. Within the bench offer, specifiers can choose: • COSI Bench (free‑standing) in 2000 mm or 3000 mm lengths—signature square slats gently rounded at the front edge for comfort, on corten legs; a simple, robust form that reads cleanly in plan and elevation. • COSI Bench with 2/3 Backrest —adds a backrest across two‑thirds of the length to create mixed seating: supported and open, enabling varied social behaviours and orientations. • COSI Park Bench (full backrest) —a more traditional backed bench, retaining the COSI geometry and finish for projects favouring continuous back support. • COSI Wall‑Mounted Bench —concealed fixings create a “floating” visual, ideal along façades, courtyards and tight pedestrian edges. • COSI Bench for Concrete Base —bench slats and brackets mount onto a precast concrete plinth for integrated, anchored seating lines. Every COSI bench is engineered for installation flexibility. The family is made for disassembly, allowing individual slat replacement and end‑of‑life separation for reuse and recycling—supporting circular design and reduced lifecycle costs without compromising structural integrity. COSI benches are supplied in corten steel as standard. Bench‑by‑Bench Summaries COSI Bench (Free‑Standing, 2000 / 3000 mm) Sculptural seating with square mahogany slats on corten legs. Rounded front edges improve comfort; available in two lengths to scale from intimate spots to major plazas. Placement, bolt‑down or in‑ground options. COSI Bench with 2/3 Backrest Partial backrest across two‑thirds of the bench introduces varied seating postures and social behaviours—half lounge, half lean—within a single element. Same materiality and installation flexibility as the free‑standing version. COSI Park Bench (Full Backrest) Full‑length back support with the COSI language of square slats (rounded at contact points) and corten structure. Designed for comfort in promenades, paths and parks. COSI Wall‑Mounted Bench Four‑slat bench mounted to vertical structures with hidden fixings for a clean “floating” effect—ideal where surface area is constrained or visual lightness is desired. COSI Bench for Concrete Base Distinctive square slats and corten brackets fixed to a concrete plinth—robust, integrated seating lines with strong visual presence and anti‑vandal performance.