Model name YC3 Chair color Black, Black/Cyan, Black/Red Maximum weight lt;150kg/330lbs Recommended weight lt;125kg/275lbs Frame type Steel Foam type High density foam Adjustable armrests Yes, two-dimensional Adjustable backrest Yes, 90° – 180° Rocking mechanism Yes, 3° – 18° Rocking mechanism lock N/A Mechanism type Butterfly mechanism Gas lift class amp; height BIFMA tested level 4, max. 100mm Base size amp; type 350mm steel base Caster size amp; material 65mm nylon caster Cover material Leatherette with carbon pattern Caster brake N/A Overall dimension (W x D x H) 66 x 70 x 125-135cm 26 x 27.5 x 49.2-53.1n Backrest dimension (W x H) 56 x 83cm 22 x 32.6in Seat dimension (W x D x H) 54x 54 x 47-57cm 21.2x 21.2 x 18.5-22.4in Armrests dimension (W x H) 66 x 61-78cm 26 x 24-30.7in Product weight 21kg/46.3lbs EAN Code Black: 4718009159501 Black/Cyan: 4718009159488 Black/Red: 4718009159495 NB: HARGA BISA BERUBAH SEWAKTU-WAKTU