Introduction
Thank you for choosing the HeroSet Office Chair 5066H. This ergonomic big and tall computer desk chair is designed to provide optimal comfort and support for extended periods of work or study. Featuring breathable leather, adjustable functions, and robust construction, this manual will guide you through its setup, operation, and maintenance to ensure a long-lasting and comfortable experience.

Figure 1: HeroSet Office Chair 5066H in Matte Black.
Setup and Assembly
Assembly of the HeroSet Office Chair 5066H is designed to be straightforward, typically taking approximately 20 minutes. All necessary tools and detailed instructions are provided within the packaging. For a complete visual guide, please refer to the official Installation Manual PDF available online.
Important Safety Note: For safe use, this chair has a maximum weight capacity of 400 pounds. Improper assembly may lead to instability or other hazards. Please follow assembly instructions carefully.

Figure 2: Product dimensions and weight capacity (400 lbs) of the HeroSet Office Chair.

Figure 3: The chair features durable, breathable, waterproof, and easy-to-clean PU leather upholstery.
Operating Instructions
The HeroSet Office Chair 5066H offers several adjustable features to customize your seating experience for maximum comfort and productivity.
Height Adjustment
Utilize the lever located under the seat to adjust the chair's height. The flexible adjustable height ranges from 43 to 47 inches, accommodating various desk heights and user preferences.
Tilt and Rocking Function
The chair features a 90-120° tilt adjustment function, allowing you to recline for different activities such as working (90°), reading (105°), or relaxing (120°). A lever is provided to lock the chair in your desired reclined position or to enable the rocking function.

Figure 4: Reclining function with tilt tension and recline lock for customized comfort.
Flip-up Armrests
The armrests can be flipped up 90°, providing space-saving convenience when the chair is not in use or needs to be tucked under a desk. This feature also helps relieve hand pressure during work or rest.

Figure 5: The chair features 90-degree flip-up armrests and 360-degree rotation for versatility.
Ergonomic Support
The HeroSet Office Chair is designed with 7 support points (head, neck, shoulder, back, waist, hips, hands) to promote optimal sitting posture and enhance comfort. The breathable PU leather upholstery ensures ventilation, while the five-layer cushion structure with PP cotton, high-density sponge padding, and silent spring packs provides immersive enjoyment and prevents collapses.

Figure 6: Ergonomic design provides comprehensive support for various body parts.

Figure 7: Details of the chair's comfortable features, including padded neck and armrests, and a high-density foam seat cushion.
Movement
The chair is equipped with quiet PU casters designed to protect floors and allow for smooth, reliable movement. The sturdy SGS-certified air bars and reinforced explosion-proof base ensure durability and stability.

Figure 8: Smoothly rolling casters and a robust 3-stage air rod contribute to the chair's reliable movement and durability.
Maintenance
To ensure the longevity and optimal performance of your HeroSet Office Chair, regular maintenance is recommended.
- Cleaning: The PU leather upholstery is easy to clean. Simply wipe the chair with a damp cloth to remove dust and spills. Avoid harsh chemicals that may damage the material.
- Screw Tightening: To improve product safety, stability, and durability, it is recommended to tighten all screws every three months.
Troubleshooting
While the HeroSet Office Chair is designed for durability, should you encounter any issues, consider the following:
- Instability: If the chair feels unstable, first check that all assembly screws are securely tightened. Refer to the assembly instructions to ensure all components are correctly installed.
- Movement Issues: Ensure the casters are free from debris and can rotate smoothly. Clean any accumulated dust or hair from the wheel mechanisms.
- Adjustment Problems: If height or tilt adjustments are not functioning correctly, check the levers and mechanisms for any obstructions or damage.
For issues not resolved by these steps, please contact HeroSet's after-sales service team for assistance.
Specifications
| Brand | HeroSet |
| Model Name | 5066H |
| Color | Matte Black |
| Product Dimensions | 11"D x 25"W x 20"H (Package Box Dimensions) |
| Seat Dimensions | Height 22", Depth 22.8", Length 22.8" |
| Back Style | Breathable Lumbar Support Back |
| Special Features | Adjustable Backrest, Adjustable Height, Arm Rest, Ergonomic, Rolling |
| Product Care Instructions | Wipe Clean |
| Maximum Weight Recommendation | 400 Pounds (as per feature bullets and important information) |
| Fill Material | Sponge |
| Arm Style | Flip-up Armrests |
| Item Weight | 30 pounds |
| UPC | 642380809912 |
| ASIN | B0CQ2PCK6S |
Warranty and Support
HeroSet stands behind the quality of its products. The HeroSet Office Chair 5066H comes with a 3-year service warranty.
Should you encounter any issues or require assistance, our dedicated after-sales service team is available to provide prompt support. Please refer to the contact information provided with your purchase or visit the official HeroSet website for further details.