Sihoo B100 Pro Classic Office Chair Version:standard it is designed with a

it is designed with a sleek backrest with Double S for comfort and support

The desk chair's 3D armrests adjust in three directions and synchronize when you recline

the first lumbar dynamic adaptive lumbar support mechanism

keeping you cool through busy afternoons and late nights

the SIHOO B100 is built for long-term durability

Sihoo B100 Pro Classic Office Chair Version:standard it is designed with aDynamic Lumbar Support That Moves With You Long hours at your desk shouldnt mean an aching lower back. The SIHOO B100 features dynamic lumbar support that adapts to your posturewhether youre leaning in to focus, sitting upright, or shifting throughout the day. Your back stays supported, never stiff. Adjustable Fit for Every Body and Desk With seat height adjustable from 18. 3" to 21. 9", the B100 adapts to your body and workspace. The adjustable