For a robust chair that's built to last look no further than the Lewis Industrial Operators Chair. It features a gas lift height adjustment hinged tilt backrest & castors to make it suitable for a variety of work spaces. The Lewis Industrial Operators Chair with Hinged Tilt Backrest is designed to offer comfortable & healthy support. It features an easy clean back & seat which is ideal for an industrial environment as well as being able to handle a recommended daily usage of 5 hours. Plus the 5 star base with castors makes for ideal stability & manoeuvrability. Finish Polyurethane back & seat with nylon base Sizes Seat W46cm x D43cm x H46-59cm. Back W41cm x H31cm Please note this item requires assembly Features. Polyurethane back & seat with nylon base Swivel function Castors Suggested maximum user weight 100kg Hinged tilt backrest Easy clean soft polyurethane seat & back Recommended usage of up to 5 hours per day 5 star base Gas lift height adjustment..