{"product_id":"prompt-task-chair-synchronous-ergonomic-chair","title":"Prompt Task Chair","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eA full synchronous task chair built for long working days\u003c\/strong\u003e – Prompt is built around a full synchromatic mechanism with integrated forward tilt, an instant-response tension control wheel with 240° of travel, and a five-position backrest lock. It is specified for office and home-office users who sit for extended periods and want the chair to move with them rather than hold them still.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAdjustment where it matters, without unnecessary complexity\u003c\/strong\u003e – A sliding seat sets seat depth to leg length, the backrest adjusts for height, and seat tilt is included as standard. On the upholstered backs the chair is GS-certified to a 150 kg user weight, placing it well above the typical 110 kg rating of standard office seating.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Highlights:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cp\u003e\u003cstrong\u003eGS-certified to 150 kg user weight on the upholstered backs\u003c\/strong\u003e – independently tested, not a manufacturer estimate\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cstrong\u003eInstant-response tension control wheel (240°)\u003c\/strong\u003e – tune recline resistance to your bodyweight\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cstrong\u003eFive-position backrest lock\u003c\/strong\u003e – more lock points than the four-position mechanisms common at this level\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cstrong\u003eIntegrated forward tilt\u003c\/strong\u003e – tips the seat forward for focused desk work\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cstrong\u003eSliding seat depth adjustment\u003c\/strong\u003e – standard, not an upcharge\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cstrong\u003eHeight-adjustable backrest\u003c\/strong\u003e – positions lumbar support to your spine, not the average\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eErgonomics\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eBuilt for people who sit six hours a day or more\u003c\/strong\u003e – Prompt's adjustments are the ones that change posture: seat height, seat depth, backrest height and recline resistance. Cold-moulded polyurethane foam is used on the upholstered seat and backrest, and the upholstery is applied without adhesives.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cp\u003e\u003cstrong\u003ePneumatic seat height adjustment:\u003c\/strong\u003e 400–540 mm depending on specification, letting you set feet flat with a neutral knee angle\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cstrong\u003eSliding seat depth:\u003c\/strong\u003e 70 mm — clears the back of the knee while keeping full thigh support\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cstrong\u003eHeight-adjustable backrest:\u003c\/strong\u003e Aligns the lumbar curve of the backrest to your own\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cstrong\u003eAdjustable torsion control:\u003c\/strong\u003e A 240° wheel sets how much resistance the recline offers\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cstrong\u003eForward tilt:\u003c\/strong\u003e Opens the hip angle for periods of close, concentrated work\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cstrong\u003eFree-flow recline with five-position lock:\u003c\/strong\u003e Move freely, or fix the backrest where you want it\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecs \u0026amp; Delivery\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align: left;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"text-align: left;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum user weight\u003c\/td\u003e\n\u003ctd\u003e150 kg — GS certified (upholstered backs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeat width\u003c\/td\u003e\n\u003ctd\u003e470 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMechanism\u003c\/td\u003e\n\u003ctd\u003eFull synchromatic with integrated forward tilt, free-flow recline, 5-position backrest lock, 240° tension control wheel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackrest\u003c\/td\u003e\n\u003ctd\u003eHeight-adjustable. Upholstered in cold-moulded polyurethane foam, or mesh, depending on the build you choose\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBase \u0026amp; castors\u003c\/td\u003e\n\u003ctd\u003eFive-star base with load-controlled twin castors to EN 12529\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eUpholstered backs: GS certificate (150 kg), BIFMA LEVEL 3, Blauer Engel, pollutant tested, ergonomics tested, Quality Office\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAssembly\u003c\/td\u003e\n\u003ctd\u003eDelivered fully assembled\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eDimensions — Standard specification\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align: left;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"text-align: left;\"\u003eUpholstered — 60 cm\u003c\/th\u003e\n\u003cth style=\"text-align: left;\"\u003eUpholstered — 70 cm\u003c\/th\u003e\n\u003cth style=\"text-align: left;\"\u003eMesh — 60 cm\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackrest height\u003c\/td\u003e\n\u003ctd\u003e600 mm\u003c\/td\u003e\n\u003ctd\u003e700 mm\u003c\/td\u003e\n\u003ctd\u003e600 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeat height\u003c\/td\u003e\n\u003ctd\u003e410–540 mm\u003c\/td\u003e\n\u003ctd\u003e410–540 mm\u003c\/td\u003e\n\u003ctd\u003e400–520 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeat depth\u003c\/td\u003e\n\u003ctd\u003e420–490 mm\u003c\/td\u003e\n\u003ctd\u003e420–490 mm\u003c\/td\u003e\n\u003ctd\u003e400–470 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBase diameter\u003c\/td\u003e\n\u003ctd\u003e690 mm\u003c\/td\u003e\n\u003ctd\u003e690 mm\u003c\/td\u003e\n\u003ctd\u003e680 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSliding seat\u003c\/td\u003e\n\u003ctd\u003e70 mm\u003c\/td\u003e\n\u003ctd\u003e70 mm\u003c\/td\u003e\n\u003ctd\u003e70 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChair weight\u003c\/td\u003e\n\u003ctd\u003e18 kg\u003c\/td\u003e\n\u003ctd\u003e20 kg\u003c\/td\u003e\n\u003ctd\u003e17 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eDelivery, returns \u0026amp; what's included\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cp\u003e\u003cstrong\u003eFree tracked UK delivery\u003c\/strong\u003e — made to order, approximately 4–5 weeks. Lead time varies with specification, so we confirm your exact date when you order.\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cstrong\u003e14-Day Hassle-Free Returns\u003c\/strong\u003e if the chair isn't the right fit (see full policy for details).\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cstrong\u003e5-year warranty\u003c\/strong\u003e on the chair; 2 years on the gas lift. UK-based support.\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cstrong\u003eFree Ultimate Ergonomics Pack\u003c\/strong\u003e — our 6-page guide to setup, posture and chair care, delivered by email after your order.\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Viasit","offers":[{"title":"Upholstered — 60 cm \/ Standard — black frame \/ Group 1","offer_id":54649979240785,"sku":"VIA-PROMPT-630.1510-G1","price":559.0,"currency_code":"GBP","in_stock":true},{"title":"Upholstered — 60 cm \/ Standard — black frame \/ Group 2","offer_id":54649979273553,"sku":"VIA-PROMPT-630.1510-G2","price":579.0,"currency_code":"GBP","in_stock":true},{"title":"Upholstered — 60 cm \/ Standard — black frame \/ Group 3","offer_id":54649979306321,"sku":"VIA-PROMPT-630.1510-G3","price":599.0,"currency_code":"GBP","in_stock":true},{"title":"Upholstered — 60 cm \/ Standard — black frame \/ Group 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