{"product_id":"onyx-high-back-ergonomic-posture-chair-with-height-adjustable-arms","title":"Onyx High Back Ergonomic Posture Chair with Height Adjustable Arms","description":"\u003cp\u003eThe \u003cstrong\u003eOnyx\u003c\/strong\u003e is a fresh, contemporary ergonomic posture chair that blends striking design with a comprehensive suite of adjustments — making it the ideal choice for anyone serious about comfort and support in their home office. Its \u003cstrong\u003emulti-functional asynchronous mechanism\u003c\/strong\u003e allows the seat and backrest to move independently, adapting to your every movement throughout the day.\u003c\/p\u003e\n\n\u003cp\u003eThe contoured foam seat and back provide excellent support and cushioning, while the \u003cstrong\u003eheight-adjustable lumbar support\u003c\/strong\u003e and \u003cstrong\u003eseat slide\u003c\/strong\u003e ensure a truly personalised fit. An optional adjustable headrest completes the package for those who need full upper-body support during long working sessions. Available in \u003cstrong\u003eBlack Fabric\u003c\/strong\u003e, \u003cstrong\u003eBlack Leather\u003c\/strong\u003e, \u003cstrong\u003eBespoke Stevia Blue Fabric\u003c\/strong\u003e, and \u003cstrong\u003eBespoke Maringa Teal Fabric\u003c\/strong\u003e. Over 20 additional bespoke fabric colours available — contact us for alternatives.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e✅ Multi-functional asynchronous mechanism\u003c\/li\u003e\n  \u003cli\u003e✅ Independent seat \u0026amp; back tilt with tilt tension adjustment\u003c\/li\u003e\n  \u003cli\u003e✅ Seat slide \u0026amp; seat angle adjustment\u003c\/li\u003e\n  \u003cli\u003e✅ Height-adjustable backrest with permanent contact\u003c\/li\u003e\n  \u003cli\u003e✅ Integral \u0026amp; adjustable lumbar support\u003c\/li\u003e\n  \u003cli\u003e✅ Height-adjustable arms (removable)\u003c\/li\u003e\n  \u003cli\u003e✅ Optional adjustable headrest available\u003c\/li\u003e\n  \u003cli\u003e✅ Contoured foam seat \u0026amp; back for extra comfort\u003c\/li\u003e\n  \u003cli\u003e✅ 24-hour usage rated\u003c\/li\u003e\n  \u003cli\u003e✅ 135kg maximum weight capacity\u003c\/li\u003e\n  \u003cli\u003e✅ Chrome metal frame\u003c\/li\u003e\n  \u003cli\u003e✅ Available in fabric or bonded leather upholstery\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Dimensions:\u003c\/strong\u003e W650 × D670 × H1020–1140mm (without headrest) \/ H1180–1430mm (with headrest)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeat Dimensions:\u003c\/strong\u003e W440 × D460–510mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeat Height:\u003c\/strong\u003e 495–570mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBack Dimensions:\u003c\/strong\u003e W430 × H530–580mm (without headrest) \/ H690–840mm (with headrest)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eArm Height:\u003c\/strong\u003e 635–735mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProduct Weight:\u003c\/strong\u003e 22kg (without headrest) \/ 23kg (with headrest)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax Weight Capacity:\u003c\/strong\u003e 135kg\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRecommended Usage:\u003c\/strong\u003e 24 hours\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame Material:\u003c\/strong\u003e Chrome Metal\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSelf Assembly Required:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eGuarantees\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMechanical Components:\u003c\/strong\u003e 5 Years\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFabric \u0026amp; Foam:\u003c\/strong\u003e 2 Years\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTest Certificates\u003c\/h3\u003e\n\u003cp\u003eBS 5459 · BS 5852 Ignition Source 5 (Crib 5) · EN 1021-1 · EN 1021-2 · BS 7176 Low Hazard\u003c\/p\u003e\n\n\u003ch3\u003eDelivery \u0026amp; Installation\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e🚚 Next Day Delivery Available\u003c\/li\u003e\n  \u003cli\u003e🔧 Professional Installation Service Available — \u003ca href=\"\/pages\/contact\"\u003econtact us\u003c\/a\u003e to add this to your order\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Dynamic Office Solutions","offers":[{"title":"Black Fabric","offer_id":62641273635146,"sku":"OP000095","price":939.0,"currency_code":"GBP","in_stock":true},{"title":"Black Leather","offer_id":62641273667914,"sku":"OP000097","price":1878.0,"currency_code":"GBP","in_stock":true},{"title":"Bespoke Stevia Blue Fabric","offer_id":62641273700682,"sku":"OP000095-STB","price":1878.0,"currency_code":"GBP","in_stock":true},{"title":"Bespoke Maringa Teal Fabric","offer_id":62641273733450,"sku":"OP000095-MRT","price":1878.0,"currency_code":"GBP","in_stock":true},{"title":"Soft Bonded Leather","offer_id":62751342035274,"sku":"OP000099","price":939.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1047\/0513\/0826\/files\/KCUP0163_1_908270dd-e494-48ac-85d3-6cb1d7f9e543.jpg?v=1783429305","url":"https:\/\/www.homesplex.com\/products\/onyx-high-back-ergonomic-posture-chair-with-height-adjustable-arms","provider":"Homesplex","version":"1.0","type":"link"}