--- https://aerocool.io/product/royal-aerosuede/ Model ROYAL Maximum weight <150kg Recommended weight <125kg Foam type High density foam Frame type Steel Adjustable armrests Yes, 2-directional with cushion pad Adjustable backrest Yes Mechanism type Tilt control mechanism, single lock Rocking mechanism Yes, 3° – 18° Gas lift class & height BIFMA tested level 4, max. 100mm Footrest Yes Base size & type 350mm steel base Caster size & material 65mm nylon caster Cover material AeroSuede Product weight 21.8kg