HKM-140371 Ergonomic Executive Chair
High back black leather swivel office chair — meticulously engineered for superior spinal support, refined aesthetics, and all-day comfort in demanding professional environments.
The HKM-140371 represents a thoughtful convergence of executive sophistication and ergonomic science. Wrapped in premium black leather with a commanding high back silhouette, this chair is purpose-built for professionals who spend extended hours at their desks — whether orchestrating high-stakes meetings, diving into analytical deep work, or steering creative projects from concept to completion.
Every contour, adjustment mechanism, and material choice has been evaluated through the lens of occupational wellness. The result is a seating solution that not only elevates the visual caliber of your workspace but actively supports musculoskeletal health through intelligent load distribution and dynamic sitting encouragement.
Core Technology
Precision Spinal Support System
Biomechanically informed design that works with your body, not against it.
High Back Lumbar Alignment
The extended backrest is sculpted to mirror the natural S-curve of the human spine. By cradling the lumbar region and providing consistent support up to the thoracic area, it helps maintain neutral pelvic positioning — a key factor in reducing intervertebral disc pressure during prolonged sitting.
Pressure-Reducing Contours
Strategically engineered cushion density zones distribute body weight evenly across the seat pan and backrest. This minimizes peak pressure points — particularly around the ischial tuberosities (sit bones) and sacral area — which are common sources of discomfort in conventional office chairs.
Active Sitting Dynamics
Unlike rigid seating that locks you into a single posture, the HKM-140371 encourages micro-movements throughout the day. This concept — known in ergonomic research as "dynamic sitting" — promotes circulation, engages core musculature, and helps prevent the stiffness associated with static postural fixation.
Material Excellence
Premium Black Leather Craftsmanship
A tactile and visual statement of quality that endures.
Genuine Leather Surface
The high-quality black leather upholstery offers a supple, breathable touch that resists cracking and peeling. Its natural grain pattern ensures each chair has a subtly unique character while maintaining a uniformly professional appearance.
Timeless Aesthetic
The deep black finish integrates effortlessly into any interior design language — from minimalist modern offices to traditional executive suites — creating a cohesive, polished environment that speaks to attention to detail.
Low-Maintenance Durability
The leather surface is treated with a protective finish that resists spills, stains, and daily wear. Routine care requires only a gentle wipe with a damp cloth, preserving the chair's pristine condition with minimal effort.
Temperature-Regulating Comfort
Unlike synthetic materials that trap heat, the leather adapts to ambient temperature — feeling cool in summer and warming gradually in winter — ensuring consistent comfort regardless of seasonal changes.
Personalization
Adaptive Ergonomics at Your Fingertips
Fine-tune your seating geometry for a truly individualized experience.
Height Adjustment
A premium gas-lift mechanism enables smooth, stepless seat height modification — allowing users of varying statures to achieve the optimal thigh-to-floor angle for proper circulation.
18.1 – 21.7 in (46 – 55 cm)
Tilt & Recline
Adjustable backrest angle with tension control lets you recline comfortably during reflective pauses or lock into an upright position for focused, task-intensive work sessions.
95° – 125° recline range
360° Swivel Mobility
Effortless rotation eliminates the need to twist or overreach when accessing peripheral equipment, filing cabinets, or engaging with colleagues — reducing cumulative spinal torque throughout the day.
Stable 5-Star Base
A reinforced five-point base with smooth-rolling casters provides a wide stability footprint. The casters glide quietly across hardwood, tile, and low-pile carpet without marking or scuffing.
Industry Insight
Understanding Ergonomic Seating Standards
What separates a truly ergonomic chair from an ordinary one — and why it matters for your long-term health.
The discipline of occupational ergonomics has established clear criteria for seating that supports the human body during prolonged desk work. Key principles include lumbar lordosis preservation (maintaining the lower back's natural inward curve), ischial weight distribution (shifting pressure from the sitting bones across a broader surface), and dynamic postural facilitation (enabling subtle, frequent position changes).
The HKM-140371 incorporates all three pillars. Its high backrest reinforces the lumbar curve at the anatomically correct height — approximately 7 to 10 inches (18 to 25 cm) above the seat surface — while the waterfall-edge seat front reduces popliteal compression behind the knees, a common contributor to leg fatigue and circulatory restriction.
Industry guidelines such as those published by the Occupational Safety and Health Administration (OSHA) and the Human Factors and Ergonomics Society (HFES) consistently emphasize adjustability as the single most critical feature of any task chair. A chair that cannot adapt to the user's unique anthropometry — regardless of how well-cushioned or aesthetically pleasing — fundamentally fails its ergonomic mandate. The HKM-140371 addresses this with multi-axis adjustability that accommodates a broad user demographic.
Designed for the Modern Professional
One chair, multiple environments — seamlessly adapting to how and where you work.
Executive Office
Command presence in the boardroom with a silhouette that conveys authority and discernment. The black leather finish complements wood, glass, and metal interiors alike.
Home Workspace
Elevate your remote office with a chair that bridges the gap between professional-grade ergonomics and residential aesthetic compatibility.
Creative Studios
For designers, developers, and content creators who need a reliable foundation during marathon creative sessions — comfort that keeps pace with inspiration.
Specifications
Technical Specifications
Detailed product parameters for informed decision-making.
Overall Height
46.5 – 50.0 in
118 – 127 cm
Seat Width
20.5 in
52 cm
Weight Capacity
300 lbs
136 kg
Net Weight
48 lbs
22 kg
Backrest Height
29 in
74 cm
Seat Depth
19.3 in
49 cm
Material
Leather
Premium Grade
Color
Black
Deep Matte Finish
Support
Frequently Asked Questions
Quick answers to common inquiries about the HKM-140371.
What body dimensions does this chair best accommodate?
The HKM-140371 is designed to accommodate a broad range of users. The seat height adjusts from approximately 18.1 to 21.7 inches (46 to 55 cm), making it suitable for individuals roughly between 5 ft 2 in and 6 ft 4 in (157 to 193 cm) in height. The high backrest provides full spinal support for users within this range, with the lumbar contour positioned to align with the natural curve of the lower back. The weight capacity is rated at 300 lbs (136 kg), supported by a robust gas-lift cylinder and reinforced five-star base.
How should I clean and maintain the leather upholstery?
Routine maintenance is straightforward. For daily care, dust the surface with a soft, dry microfiber cloth. For occasional deeper cleaning, use a slightly damp cloth with mild soap, then immediately dry with a clean towel. Avoid harsh chemical cleaners, solvents, or abrasive pads, as these can degrade the leather's protective finish. We recommend applying a quality leather conditioner every 4 to 6 months to preserve suppleness and prevent cracking. Keep the chair away from direct sunlight and heat sources to maintain color integrity.
Does the chair require assembly upon delivery?
Yes, the HKM-140371 ships in a single carton with all components, hardware, and an illustrated assembly guide included. Assembly is designed to be intuitive and typically takes 20 to 30 minutes for one person. The primary steps involve attaching the five-star base to the gas cylinder, securing the seat mechanism, and mounting the backrest. All necessary tools are provided in the package. No specialized skills are required — simply follow the step-by-step instructions.
Is the gas cylinder certified for safety?
Absolutely. The gas-lift cylinder used in the HKM-140371 meets Class 3 certification standards, which is the industry benchmark for office chair pneumatic components. It has undergone rigorous fatigue testing and burst-pressure verification to ensure reliable, long-term performance. The mechanism is fully enclosed within the chair's telescopic cover, providing both safety shielding and a clean aesthetic appearance.
Can this chair be used on hardwood floors without causing damage?
Yes. The HKM-140371 is equipped with smooth-rolling polyurethane casters that are specifically designed to be floor-friendly. They glide quietly across hardwood, laminate, tile, and low-pile carpeted surfaces without scratching, scuffing, or leaving marks. For added protection on particularly delicate flooring, a chair mat can be used, though it is not strictly necessary under normal usage conditions.
What distinguishes this chair from budget office chairs in terms of long-term value?
The primary differentiators are material integrity, structural durability, and ergonomic precision. Budget chairs often use bonded leather or low-grade synthetics that peel within months; the HKM-140371 employs high-quality leather with a protective treatment for sustained appearance. The internal frame is constructed from reinforced steel and dense molded foam that resists deformation over time — whereas economy chairs frequently develop sagging cushions and compromised lumbar support after a year of daily use. Additionally, the gas cylinder and tilt mechanism are built to higher tolerances, ensuring consistent performance far beyond the lifespan of entry-level alternatives.
Purchase with Confidence
Free Shipping on All Orders
Complimentary delivery to your doorstep with no minimum purchase requirement. Every order ships at no additional cost.
180-Day Purchase Protection
Extended coverage against manufacturing defects for a full six months after delivery — double the industry standard.
30-Day Money-Back Guarantee
Not completely satisfied? Return the chair within 30 days for a full refund — no questions asked, no restocking fees.
24-Month Warranty Service
Comprehensive two-year warranty covering all mechanical components, materials, and workmanship for complete peace of mind.
The HKM-140371 Ergonomic Black Leather High Back Executive Swivel Office Chair — where meticulous engineering, premium materials, and refined design converge to redefine your daily seating experience.
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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