Executive Seating
Luxury Leather Ergonomic Swivel Office Chair
Model HKM-981779
Designed for the discerning professional, the HKM-981779 merges supple genuine leather upholstery with precision ergonomic engineering. Every detail—from the hand-finished stitching to the fluid 360° swivel—has been refined to deliver an uncompromising seating experience that supports focus, posture, and well-being throughout the longest workdays.
At a Glance
Where craftsmanship meets all-day comfort
The HKM-981779 is more than an office chair—it is a strategic investment in your productivity and health. Built around the natural curvature of the spine and wrapped in premium leather, it brings executive-grade refinement into any workspace, whether a corner office or a sophisticated home study.
Adaptive Ergonomic Contour
The backrest mimics the natural S-curve of the spine, distributing pressure evenly and helping reduce lower back fatigue during extended sitting sessions.
Genuine Leather Upholstery
Supple, breathable top-grain leather with a refined pebble texture that ages gracefully, developing a rich patina unique to each chair over time.
Smooth Height Adjustment
Class-4 gas lift mechanism enables effortless seat-height customization from 17.7 to 21.7 inches (45–55 cm), accommodating desks of varying heights with precision.
360° Swivel Mobility
A robust dual-ball-bearing swivel base delivers fluid, silent rotation so you can pivot between screens, reach files, and collaborate without leaving your seat.
Ergonomic Engineering
Designed for the human body, proven by science
Prolonged sitting places significant stress on the lumbar spine, cervical vertebrae, and hip joints. Research indicates that chairs with proper lumbar support and adjustable geometry can reduce musculoskeletal discomfort by up to 40% compared to static, non-ergonomic alternatives. The HKM-981779 addresses this directly through its anatomically informed design.
Lumbar Support Architecture
The integrated lumbar curve is positioned precisely at the L3–L5 vertebrae region, providing gentle yet firm reinforcement that encourages a neutral pelvic tilt. This discourages slouching and helps maintain the spine's natural lordotic curve—critical for preventing chronic lower back strain during 8+ hour workdays.
Beyond lumbar care, the seat cushion employs multi-density foam layering: a firmer base layer for structural integrity, topped with a softer viscoelastic comfort layer that conforms to the sitz bones while reducing pressure on the thighs. The waterfall-edge front profile further relieves pressure behind the knees, promoting healthy circulation to the lower legs.
Material Excellence
Genuine leather that tells a story
In the world of fine seating, leather quality distinguishes an ordinary chair from an heirloom piece. The HKM-981779 uses carefully selected top-grain leather—the second-highest grade of genuine leather—known for its ideal balance of durability, breathability, and luxurious hand-feel.
Unlike bonded or heavily corrected leathers, top-grain leather retains the natural grain structure of the hide while having the outermost layer lightly sanded to remove imperfections. The result is a consistent, refined surface that remains porous enough to allow air circulation—critical for thermal comfort during marathon work sessions. Over years of use, the leather develops a distinctive patina, deepening in character and becoming uniquely yours.
Double-stitched seams with high-tenacity nylon thread reinforce stress points along the seat cushion and backrest perimeter, ensuring the upholstery remains taut and wrinkle-free even after thousands of hours of use.
Precision Control
Adjustment that puts you in command
No two bodies are identical, and no single fixed seating position works for everyone. The HKM-981779 provides intuitive, tool-free adjustments that let you fine-tune your seating geometry in seconds.
Height Range: 17.7–21.7 in (45–55 cm)
The pneumatic cylinder offers a generous 4-inch (10 cm) vertical travel, easily operated via the under-seat paddle lever with smooth, controlled ascent and descent.
Tilt Tension & Lock
Adjust the recline resistance to match your body weight, and engage the tilt lock at any angle for a stable, reclined working or resting position.
Built to Endure
Engineered for years of daily use
An office chair should be a long-term asset, not a disposable commodity. The HKM-981779 is constructed around a reinforced steel frame and a heavy-duty five-star aluminum alloy base, providing a rock-solid foundation that supports up to 330 lbs (150 kg) without flex or instability.
Rigorous Testing Standards
Every structural component—from the gas lift to the caster housings—undergoes cycle testing that exceeds BIFMA industry benchmarks. The dual-wheel nylon casters are rated for over 100,000 revolutions on both hard flooring and low-pile carpet, ensuring whisper-quiet gliding for years.
The chrome-finished armrest supports are crafted from corrosion-resistant steel, while the padded arm caps use high-resilience foam that retains its shape under repeated elbow and forearm pressure. This is seating built with longevity in mind, designed to maintain its elegance and structural integrity through rigorous daily use.
Technical Specifications
Detailed specifications at a glance
All measurements are provided in US customary units with metric equivalents. Specifications reflect the standard configuration of the HKM-981779.
Overall Height
42.1–46.1 in
(107–117 cm)
(107–117 cm)
Seat Width
20.5 in
(52 cm)
(52 cm)
Seat Depth
19.7 in
(50 cm)
(50 cm)
Backrest Height
28.3 in
(72 cm)
(72 cm)
Seat Height Range
17.7–21.7 in
(45–55 cm)
(45–55 cm)
Weight Capacity
330 lbs
(150 kg)
(150 kg)
Net Weight
48.5 lbs
(22 kg)
(22 kg)
Base Diameter
27.6 in
(70 cm)
(70 cm)
Armrest Height
25.6–29.5 in
(65–75 cm)
(65–75 cm)
Caster Type
Dual-Wheel Nylon
Hard & Carpet Floor
Hard & Carpet Floor
Versatile Application
A chair that adapts to your workspace
Whether you are furnishing a private executive office, upgrading a managerial workstation, or curating a refined home office, the HKM-981779 integrates seamlessly. Its timeless silhouette and neutral leather palette complement contemporary, mid-century modern, and traditional interiors alike.
For professionals in finance, law, creative direction, software engineering, and consulting—where focus and presence matter equally—this chair delivers both. The swivel function supports dynamic workflows, while the executive aesthetic signals attention to quality and detail. In open-plan environments, the chair's quiet casters and composed visual presence make it a distinguished yet unobtrusive addition.
Frequently Asked Questions
Answers to common inquiries
What type of leather is used on the HKM-981779?
The HKM-981779 is upholstered in top-grain genuine leather. This grade sits just below full-grain in the leather hierarchy and is prized for its smooth, consistent surface, excellent durability, and natural breathability. It is resistant to cracking and peeling when properly maintained, and it develops a beautiful patina over years of use.
Is this chair suitable for users over 6 feet tall?
Yes. With a backrest height of 28.3 inches (72 cm) and a seat depth of 19.7 inches (50 cm), the HKM-981779 accommodates users up to approximately 6 ft 4 in (193 cm) comfortably. The adjustable seat height further allows taller individuals to achieve proper thigh-to-floor alignment.
Does the chair require assembly?
Minimal assembly is required. The chair ships with the backrest, seat cushion, gas lift, base, and casters as modular components. An illustrated guide and all necessary hardware are included. Most users complete assembly within 15–25 minutes using basic tools.
What is the weight capacity of this chair?
The HKM-981779 has a tested weight capacity of 330 lbs (150 kg). The reinforced steel frame, heavy-duty gas lift, and five-star aluminum alloy base work in concert to provide stable, reliable support across the full rated range.
Can the armrests be adjusted or removed?
The armrests on the HKM-981779 are fixed in position to maintain the chair's structural integrity and refined silhouette. They are set at an optimal height of 25.6–29.5 inches (65–75 cm) from the floor, which aligns with standard desk heights of 28–30 inches (71–76 cm).
Is the leather easy to clean and maintain?
Absolutely. Routine care involves wiping the surface with a soft, slightly damp cloth to remove dust and light soiling. For deeper cleaning, a pH-balanced leather cleaner is recommended every 3–6 months. Avoid harsh solvents, direct sunlight exposure for prolonged periods, and excessive moisture to preserve the leather's natural oils and finish.
Purchase with Confidence
Customer-first policies
Free Shipping on All Orders
Complimentary standard shipping on every order with no minimum purchase required. Your chair arrives at your doorstep with zero added delivery cost.
180 Days Purchase Protection
Your investment is safeguarded for a full six months against manufacturing defects. We stand firmly behind the quality of every chair we deliver.
30-Day Money-Back Guarantee
If you are not completely satisfied within 30 days of delivery, return the chair in its original condition for a full and prompt refund.
24-Month Warranty Service
Comprehensive two-year warranty covering all mechanical components, including the gas lift, swivel mechanism, casters, and frame structure.
Nationwide Service Network & Support
With over 3,600+ authorized service centers across the United States, we ensure comprehensive after-sales support for your product, giving you complete peace of mind.
We understand that maintenance needs may arise. When you purchase from us, you gain access to our unparalleled service ecosystem designed for maximum convenience and reliability.
1. DIY Repair & Parts Replacement:
For minor repairs or part replacements that can be handled personally, we provide cost-price genuine parts during the warranty period. Each order is accompanied by clear, step-by-step video tutorials to guide you through the self-repair process seamlessly.
2. Professional Servicing:
For issues requiring expert attention, simply contact our support team. We will locate the nearest authorized service center based on your order and location details. You only need to bring your product to the designated center. Once servicing is complete, we will notify you for pickup. All repairs are free during the warranty period; afterward, only cost-based fees apply.
Every product on Hekomart.com is expertly curated from thousands, quality tested, and lifestyle approved. Elevate your everyday.
Express Delivery Priority - Where Speed Meets Satisfaction
At Hekomart.com, we understand the anticipation that comes with every online order. While most platforms rely on standard economy shipping, we prioritize your excitement by strategically selecting premium express carriers to accelerate deliveries. Our intelligent logistics system analyzes real-time data to optimize routes, partnering with globally-recognized couriers like DHL, FedEx, and UPS to ensure 30% faster doorstep arrivals* than industry averages.
Every package receives 24/7 tracking visibility and proactive delivery updates, transforming waiting time into confidence. For time-sensitive purchases, our "Expedited Service Guarantee" offers optional priority handling at no extra cost, because your satisfaction isn't just a goal – it's the core of our delivery DNA.
*Based on internal 2025 data comparing standard shipping durations across major platforms. Delivery times vary by destination and customs procedures.
Credit Card 180 Days Purchase Protection
The 180 Days Purchase Protection protects the buyer if an item purchased has not been shipped or if a shipped item is significantly not as described by the seller. The 180 Days Purchase Protection covers all purchases and payments made through our website. We accept Visa, Master Card, American Express, and Discover Card. If you don't receive the item that you ordered, or it shows up significantly different from its description, you may qualify for Purchase Protection, and we'll reimburse you for the full purchase price plus any original shipping costs, subject to terms and limitations. If you are charged for a transaction that you didn't make, let us know within 60 days, and we've got you covered.
30 Days Money-Back Guarantee
We are confident that our products are of great quality and even better value. However, if upon receiving and inspecting your item you decide that you want to return it, you will have 30 days as of the date of shipment arrival to return it for a refund minus the shipping cost. No restocking charges. Any additional fees associated with a purchase transaction will be deducted from the amount of the refund.
24-Month Extended Warranty Service
If you purchase products from our website, you have 24 months to request repairs or replacement if any products turns out to be faulty or are not as advertised. During the warranty period if any product is found to have a manufacturer defect, we will repair or replace the defective part(s). If a product cannot be repaired or replaced within a reasonable time, you can request a refund or price reduction. We are confident that our products are of great quality and even better value. However, if upon receiving and inspecting your item you decide that you want to return it, you will have 30 days as of the date of shipment arrival to return it for a refund minus the shipping cost.
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