Home / Office Chairs View more images Product Description The Spira Plus Ergonomic Task Chair blends the adjustability of a specialist ergonomic chair with the aesthetic appeal needed for modern, large-scale work environments. Designed to promote healthy posture and long-term comfort, it offers a high degree of customisation through a wide range of ergonomic features—including integrated air cell support and multiple size options. Ideal for preventative use and suitable for diverse user needs, Spira Plus is a reliable solution for both individual and shared workspaces. Key Features: Sculpted backrest with integrated lumbar and pelvic air cells Back height adjustment: 70mm range High back height: 595–665mm Mid back height: 475–545mm Available with two back sizes and two seat sizes to suit a broad user population Seat width: 460mm (standard) / 490mm (shallow) Seat depth: 420–470mm (standard) / 350–400mm (shallow) Seat height adjustment: 465–635mm Contoured back shape for snug, supportive fit Sliding seat with 50mm depth adjustment (shallow seat optional for smaller users) 4D armrests: 70mm vertical travel 55mm forward/backward adjustment 30° inward/outward pivot Inner arm width: 395–465mm Outer arm width: 590–660mm Arm pad to seat height: 160–260mm Retro-fittable headrest: 60mm vertical travel and 45° rotation Independent back angle adjustment (6°) Synchronous recline up to 20°, with 5° forward tilt Back width: 490mm Overall chair height: 1070–1240mm Seat cushion: CMHR moulded foam with memory foam wrap for enhanced comfort Standard Specifications: Castors: 65mm black (hard tyre, free-wheel) Base: Low-level black nylon Gas lift: Black powder-coated steel with 170mm travel Mechanism: Synchronous with recline and forward tilt, plus independent back angle Upholstery: Standard fabric options in Xtreme Havana (black) or Costa (blue) Optional Upgrades: Brake-unloaded castors (for hard or soft floors) Glides Coccyx cut-out seat Shallow seat for shorter users Quilted seat or two-tone upholstery Vinyl or leather upholstery (with panelled finish) Counter-height gas lifts: Low or high options, with or without footring or footplate Specifications MPN SPIRAPLUS-MB Warranty 5 Years Backrest Size High Category Chair Type Ergonomic Desk Chair Coccyx Cut Out Yes Adjustable Armrests Yes Seat Depth Adjustment Yes Grade A Ergonomic Support Yes Brand Orangebox Product Code SPIRAPLUS-MB Weight 20kg Customer reviews No reviews left yet Write A Review Sort byMost RecentTop Rated Description The Spira Plus Ergonomic Task Chair blends the adjustability of a specialist ergonomic chair with the aesthetic appeal needed for modern, large-scale work environments. Designed to promote healthy posture and long-term comfort, it offers a high degree of customisation through a wide range of ergonomic features—including integrated air cell support and multiple size options. Ideal for preventative use and suitable for diverse user needs, Spira Plus is a reliable solution for both individual and shared workspaces. Key Features: Sculpted backrest with integrated lumbar and pelvic air cells Back height adjustment: 70mm range High back height: 595–665mm Mid back height: 475–545mm Available with two back sizes and two seat sizes to suit a broad user population Seat width: 460mm (standard) / 490mm (shallow) Seat depth: 420–470mm (standard) / 350–400mm (shallow) Seat height adjustment: 465–635mm Contoured back shape for snug, supportive fit Sliding seat with 50mm depth adjustment (shallow seat optional for smaller users) 4D armrests: 70mm vertical travel 55mm forward/backward adjustment 30° inward/outward pivot Inner arm width: 395–465mm Outer arm width: 590–660mm Arm pad to seat height: 160–260mm Retro-fittable headrest: 60mm vertical travel and 45° rotation Independent back angle adjustment (6°) Synchronous recline up to 20°, with 5° forward tilt Back width: 490mm Overall chair height: 1070–1240mm Seat cushion: CMHR moulded foam with memory foam wrap for enhanced comfort Standard Specifications: Castors: 65mm black (hard tyre, free-wheel) Base: Low-level black nylon Gas lift: Black powder-coated steel with 170mm travel Mechanism: Synchronous with recline and forward tilt, plus independent back angle Upholstery: Standard fabric options in Xtreme Havana (black) or Costa (blue) Optional Upgrades: Brake-unloaded castors (for hard or soft floors) Glides Coccyx cut-out seat Shallow seat for shorter users Quilted seat or two-tone upholstery Vinyl or leather upholstery (with panelled finish) Counter-height gas lifts: Low or high options, with or without footring or footplate Reviews No reviews left yet Write A Review Sort byMost RecentTop Rated Attributes MPN SPIRAPLUS-MB Warranty 5 Years Backrest Size High Category Chair Type Ergonomic Desk Chair Coccyx Cut Out Yes Adjustable Armrests Yes Seat Depth Adjustment Yes Grade A Ergonomic Support Yes Brand Orangebox Product Code SPIRAPLUS-MB Weight 20kg Delivery & Returns Customer Reviews Orangebox Spira Plus - Ergonomic Armchair Item in Stock (170 Available) Product Code SPIRAPLUS-MB Chair Features Medium Back - No Armrests - No Headrest Medium Back - With Armrests Medium Back - With Headrest Medium Back - With Armrests & Headrest High Back - No Armrests - No Headrest High Back - With Armrests High Back - With Headrest High Back - With Armrests & Headrest Gas Lift/Footring Options Standard Gas Lift Low Level Gas Lift Low Counter Height Gas Lift (+£23.00) Low Counter Height Gas Lift & Footring (+£128.00) Low Counter Height Gas Lift & Footbase (+£190.00) High Counter Height Gas Lift (+£23.00) High Counter Height Gas Lift & Footring (+£128.00) High Counter Height Gas Lift & Footbase (+£190.00) Seat Options Standard Sliding Seat Shallow Sliding Seat (+£23.00) Invisible Coccyx Cutout (+£86.00) Comfort Seat Quilt (+£60.00) £737.00