1. Introduction
Thank you for choosing the BestGlory Leather Office Chair, Model MP-289. This executive office chair is designed to provide superior comfort and ergonomic support for long hours of work or relaxation. Featuring high-quality PU leather, adjustable headrest, lumbar support, and flip-up armrests, this chair is built for durability and user-friendly functionality. This manual provides detailed instructions for assembly, operation, maintenance, and troubleshooting to ensure you get the most out of your new office chair.

Image 1.1: The BestGlory Leather Office Chair, Model MP-289, in black, showcasing its executive design and comfortable appearance.
2. Safety Information
- Read all instructions carefully before assembly and use.
- Keep all packaging materials (plastic bags, foam, etc.) away from children.
- Ensure all screws and bolts are securely tightened before using the chair. Periodically check and re-tighten as necessary.
- Do not stand on the chair or use it as a step stool.
- Do not exceed the maximum weight capacity of 400 pounds (181 kg).
- Use the chair on a flat, stable surface to prevent tipping.
- Avoid exposing the chair to direct sunlight or extreme temperatures to prevent material degradation.
- Keep hands and fingers clear of moving parts during adjustment.
3. Package Contents
Before beginning assembly, verify that all components are present and undamaged. If any parts are missing or damaged, please contact customer support.
- Backrest
- Seat Cushion
- Armrests (2)
- Base (5-star)
- Casters (5)
- Gas Lift Cylinder
- Mechanism Plate
- Hardware Kit (screws, washers, Allen wrench)

Image 3.1: Overview of product dimensions and confirmation that installation tools are included in the package.
4. Setup and Assembly
Follow these steps carefully to assemble your BestGlory Office Chair. It is recommended to assemble the chair on a soft, clean surface to prevent damage.
- Attach Casters to Base: Insert each of the five casters into the holes at the end of each leg of the 5-star base. Push firmly until they click into place.
- Insert Gas Lift: Place the gas lift cylinder into the center hole of the assembled 5-star base.
- Attach Mechanism Plate to Seat: Align the mechanism plate with the pre-drilled holes on the underside of the seat cushion. Ensure the front of the mechanism faces the front of the seat. Secure with screws provided in the hardware kit, tightening them with the Allen wrench.
- Attach Armrests to Seat: Attach the armrests to the sides of the seat cushion using the designated screws. Do not fully tighten yet.
- Attach Backrest to Seat and Armrests: Align the backrest with the mounting points on the seat and the armrests. Secure the backrest to the seat and armrests using the remaining screws. Once all screws are in place, fully tighten all screws for the armrests and backrest.
- Connect Assembled Top to Base: Carefully place the assembled seat and backrest onto the gas lift cylinder, ensuring the tapered end of the gas lift fits securely into the mechanism plate.
5. Operating Instructions
Your BestGlory Office Chair offers several adjustable features to customize your seating experience.
5.1. Height Adjustment
To adjust the chair's height, locate the lever on the right side, beneath the seat. While seated, pull the lever up to lower the chair. To raise the chair, stand up slightly and pull the lever up. Release the lever at your desired height.
5.2. Tilt/Rocking Function and Lock
The chair features a 90-120° tilt function. To enable rocking, pull the lever on the left side, beneath the seat, outwards. To lock the chair in an upright position (90°), push the lever inwards. The tilt tension can be adjusted by rotating the round knob located at the front, under the seat. Turn clockwise to increase tension (making it harder to recline) and counter-clockwise to decrease tension (making it easier to recline).

Image 5.1: Illustration of the chair's rocking function, showing recommended angles for work (90°), gaming (105°), and rest (130°), along with controls for recline lock and tilt tension.
5.3. Adjustable Headrest
The headrest can be adjusted vertically by pulling it up or pushing it down to find your optimal neck and head support. It offers approximately 3 inches of vertical adjustment.

Image 5.2: Close-up view demonstrating the adjustable headrest, which can be moved up or down to suit individual height and posture.
5.4. Flip-up Armrests
The armrests can be flipped up by rotating them upwards to a 90-degree angle. This feature allows the chair to be pushed closer to a desk or to save space when not in use. To return them to the down position, simply push them back down.

Image 5.3: Visual guide demonstrating how the armrests can be flipped up to a 90-degree angle for space-saving or easier access.
5.5. Lumbar Support
The chair's ergonomic design includes integrated lumbar support that conforms to the natural curve of your spine, providing comfort and reducing back strain. This support is fixed and designed to provide optimal positioning.

Image 5.4: Diagram illustrating the ergonomic support points of the chair, including head, neck, scapular, back, and hip support, highlighting comprehensive comfort.
6. Maintenance and Care
Proper care will extend the life and appearance of your BestGlory Office Chair.
- Cleaning: Wipe clean with a soft, damp cloth. For tougher spots, use a mild soap solution and wipe dry immediately. Avoid harsh chemicals or abrasive cleaners, as they can damage the PU leather.
- Spills: Blot spills immediately with a clean, dry cloth. Do not rub.
- Inspection: Periodically check all bolts and screws to ensure they are tight. Re-tighten as needed to maintain stability and safety.
- Casters: Clean casters regularly to remove dust and debris that can impede smooth rolling.
- Avoid Direct Sunlight: Prolonged exposure to direct sunlight can cause the PU leather to fade or crack.

Image 6.1: Detailed view of the seat cushion's construction, highlighting its waterproof and breathable PU leather, high-density sponge, and double-layer design for enhanced comfort and durability.
7. Troubleshooting
If you encounter any issues with your chair, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Chair does not adjust height | Gas lift cylinder is faulty or lever is not engaged. | Ensure the height adjustment lever is fully pulled. If the issue persists, the gas lift may need replacement. Contact customer support. |
| Chair wobbles or is unstable | Loose screws or uneven assembly. | Check and tighten all assembly screws, especially those connecting the armrests, backrest, and mechanism plate to the seat. Ensure the base is on a flat surface. |
| Casters do not roll smoothly | Debris caught in casters or casters are damaged. | Remove any hair or debris from the caster wheels. If damaged, casters may need replacement. |
| Chair squeaks | Loose connections or friction between parts. | Tighten all screws. Apply a small amount of silicone lubricant to moving parts or connection points if necessary. |
8. Specifications
| Feature | Detail |
|---|---|
| Brand | BestGlory |
| Model Name | MP-289 |
| Color | Black |
| Product Dimensions | 21"D x 10"W x 26"H (approximate, varies with adjustments) |
| Back Style | Solid Back |
| Special Features | Adjustable Backrest (tilt), Adjustable Headrest, Adjustable Height, Adjustable Lumbar (integrated) |
| Product Care Instructions | Wipe Clean |
| Recommended Uses | Computer, Gaming, Office |
| Maximum Weight Recommendation | 400 Pounds (181 kg) |
| Style | Executive |
| Arm Style | Flip-up |
| Seat Depth | 23 inches |
| Fill Material | Sponge |
| Tilting | Yes |
| Item Weight | 36 pounds (16.3 kg) |
9. Warranty and Support
BestGlory is committed to providing high-quality products and excellent customer service. While specific warranty details may vary, we offer support for our products.
9.1. Returns
This product is eligible for returns within 30 days of purchase, subject to the retailer's return policy.
9.2. Customer Support
For any questions, concerns, or assistance with your BestGlory Office Chair, please contact our customer service team:
- Email: cs@bestglorys.com
- Phone: +1 (970) 866-1010
When contacting support, please have your model number (MP-289) and purchase information ready.




