KOLLIEE Mesh Office Chair, a professional sleek office chair provides sophisticated support for all-day comfort. Installation Video Showed on Detail Page We provide an installation video on the "Images" part. You can see all steps of assembling in the second half of the video.If you have any questions about installation or use of kolliee armless office chair, please get back to us at any time. We’ll always be here at your service. Your satisfaction is our priority. MESH OFFICE CHAIR DIMENSIONS All dimensions are measured manually, these may have deviation range around 1 inch. If by any chance they are not the same as your measure, we are sorry for that. Minimum Overall Height (top to floor): 33.1" (84cm) Maximum Overall Height (top to floor): 37.8" (96cm) Seat Height (seat to floor): 17" - 21.7" (43-55 cm) Adjustable Height: 4.7" (12 cm) Chair Seat Size (width x depth): 18.1" x 17.5" (46x44.5cm) Seat Thickness: 2.2" (5.5 cm) Height From Chair Top to Cushion: 17.3" (44 cm) Chair Back Width: 16.1" (41 cm) 360° SWIVEL MESH OFFICE CHAIR The office chair can swivel 360 degrees and it's solid, every parts engage to each other firmly. The office chair have heavy-duty base, great stability, the weight capacity reaches 250 lbs HEIGHT ADJUSTABLE OFFICE CHAIR Adjustable Height: 4.7 inch (12 cm) Simply to adjust the seat height by pressing the "button" underneath the chair seat. REMOVABLE CHAIR LEGS Easy to assemble or detach the chair legs. 360° SWIVEL CASTERS Our mesh office chair has these durable, flexible 360 degree swivel casters which don't leave scratches on your floor, moving smoothly and no noise. HIGH RESILIENCE FOAM CUSHION Thicken padded in superior quality, does not deform easily. Compared with other low cost chip foam cushion, our high resilience foam cushion is more comfortable and durable that built to last. HIGH DENSITY MESH MADE IN USA Ergonomic mesh office chair features this high quality mesh which is more breathable, durable and not easy to deform. Black mesh covers both the padded seat and the chair back, it allows air to circulate to keep you cool while leaning. ERGONOMIC LUMBAR SUPPORT Our mesh office chair provides enough lumbar support that can effectively reduce the back pain during long time working. HIGH QUALITY GAS LIFT CYLINDER Our gas lift cylinder selected superior material, more durable, more safety, with good weight capacity and long lifespan. OFFICE CHAIR WITHOUT ARMREST No limits, no narrows, no uncomfortable causing by armrests. You don't have to worry about the back of the chair narrows and squeezes your hips. Friendly to bigger person. EASY TO SLIDE UNDER YOUR DESK This office chair is in the perfect size that slides right under the desk so it is out of the way when not in use. You don't have to worry about hitting your desk, or spinning and having your headphones accidentally caught in them and ripping out. SPECIAL “Y” SHAPE DESIGN The office chair back features the special "Y" shape that offers better lumbar support and unique form design. EASY TO ASSEMBLE Our office chair comes with all parts and necessary tools. So easy to put the chair together by following the instruction. We also provide the video instruction to help you.