--- https://aerocool.io/product/count/ Model Name COUNT Weight Capacity <150kg Recommended weight <125kg Foam Type High density foam Frame Type Steel Adjustable Armrests No, Fixed Adjustable Backrest Yes Mechanism Type Butterfly Mechanism Rocking Mechanism Yes, 3° – 18° Gas Lift Class & Height Class 4 & Max. 100mm Base size & type 350mm nylon base Caster size & material 50mm nylon caster Cover material AeroSuede, Leatherette Overall dimension (W x D x H) 70 x 70 x 127-137cm Backrest dimension (W x H) 54 x 86cm Seat dimension (W x D x H) 56 x 52 x 47-57cm Armrests dimension (W x H) 70 x 63-73cm Product weight 18.9kg