












Office Chair
US$539.98
Estimated delivery: 2–7 business days ✓ Free shipping — over $200Description
Product Details Color:Ink Black Pattern:Solid Size:Pack of 1 Item Dimensions:28.35 x 28.74 x 40 inches Item Weight:38.3 pounds Maximum Weight Recommendation:300 pounds Included Components:L...
Delivery & Returns
Free shipping over $200
Orders of $200 or more ship free. No code needed.
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Product Details
- Color:Ink Black
- Pattern:Solid
- Size:Pack of 1
- Item Dimensions:28.35 x 28.74 x 40 inches
- Item Weight:38.3 pounds
- Maximum Weight Recommendation:300 pounds
- Included Components:LED Light
- Number of Items:1
- Unit Count:1 Count
- Model Name:M18-M167
- Model Number:M18
- Form Factor:Recliner
- Shape:L-Shaped
- Additional Features:Adjustable Head, Adjustable Height, Adjustable Lumbar, Ergonomic, Rolling
- Room Type:Game Recreation Room, Home, Meeting, Office, Studio
- Age Range Description:Adult
- Indoor Outdoor Usage:Indoor
- Number of Packs:1
- Item Highlight:Desk Chair With Adaptive Lumbar Support, Wide Headrest, 360° Rotatable Flip-Up Armrests, Black
- Manufacturer Part Number:M18-M167
- Material Type:Mesh
- Frame Material Type:Polypropylene
- Product Care Instructions:Wipe Clean
- Seat Material:Mesh
- Fill Material:Foam
- Upholstery Fabric Type:Mesh
- Back Style:Split Back
- Style Name:Modern
- Finish Types:Polished
- Arm Style:Flip-up
- Leg Style:wheels
- Item Dimensions D x W x H:28.35"D x 28.74"W x 40"H
- Seat Back Interior Height:21.1 inches
- Seat Height:21.85 inches
- Seat Depth:17.13 inches
- Seat Length:19.7 inches
- Reclining Position Count:3
About this item
- Adaptive Dynamic Lumbar Support — Long hours at your desk shouldn’t leave your lower back aching. The SIHOO B100 ergonomic office chair features elastic lumbar support with a dual-back design that moves with your spine. Lean forward to focus, sit upright in meetings, or shift positions throughout the day—this desk chair adapts with you, keeping your back supported and comfortable without feeling stiff.
- Retractable Footrest for Full Relaxation — Pull out the smooth footrest and stretch out fully. Lean back, relax, and transform this computer chair into a personal lounge for quick power naps, gaming sessions, or movie breaks after work. Comfort follows your every move.
- 4D ARMRESTS & LOCKABLE RECLINE — Adjust, rotate, or flip the 4D armrests to fit your posture or slide neatly under your desk. Three recline angles (110° / 125° / 135°) let this office chair shift effortlessly from focused work to relaxing breaks—perfect for home offices, gaming, or long study sessions.
- Plush Cushion & Ultra-wide Headrest — The widened seat cushion spreads weight evenly for lasting comfort. The 3D ultra-wide headrest supports your neck naturally, keeping shoulders relaxed during typing, calls, or video conferences. Sit longer, stay supported, and feel the difference in every hour at your desk.
- Breathable Mesh That Works As Hard As You Do — The full-mesh back and seat promote airflow, keeping you cool through long workdays or late-night gaming. Supportive yet breathable, this mesh office chair prevents overheating and delivers consistent comfort all day.
- Built Strong, Built Quiet — Reinforced metal base and Class 4 SGS-certified gas lift provide stable support up to 300 lbs. Smooth tilt control and quiet casters glide across any floor without noise—ideal for shared spaces or late-night work sessions.
- Trusted Quality & Worry-free Support — Tested to meet SGS and BIFMA standards, the SIHOO B100 ergonomic office chair is built for long-term durability and daily performance. Backed by a 36-month coverage and 30-day easy returns, you can order your desk chair with confidence.
Shipping Policy
ZenOffice ships from the United States.
Most orders leave the warehouse within 1 business day and arrive in 2–7 business days.
- Free shipping on orders of $200 or more, applied automatically
- Otherwise shipping is a flat $6.90
- Your tracking number is emailed as soon as your order ships
- We currently ship to the lower 48 United States
Return policy
30-day returns.
If it's not quite right, you have 30 days from delivery to send it back, and ZenOffice will email you a return label. Return shipping fees may apply depending on the item's size, weight, and shipping location, and are deducted from your refund.
How it works
- Email us at support@zenofficeshop.com with your order number.
- We send a return label within 1 business day, along with the return shipping cost (if any) so you can decide.
- Your refund goes back to your original payment method within 10 business days of the carrier scan.
Items should be unused, unassembled, and in their original packaging. Damaged or defective on arrival? Send a photo and ZenOffice replaces or refunds immediately, return shipping on us, and in most cases you won't need to send anything back.

