Office Chairs >>
HKM-538835 Ergonomic Genuine Leather Office Chair with Lumbar Support, Adjustable Backrest and 3D Armrests for Managers
HKM-538835 Ergonomic Genuine Leather Office Chair
Precision-crafted for the discerning professional. Where luxury leather meets adaptive ergonomics, engineered to support every movement of your workday.
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Genuine Leather Luxury
Premium genuine leather upholstery delivers a refined aesthetic that ages gracefully, developing a rich patina unique to your use.
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Healthy Posture Design
Ergonomic contouring encourages natural spinal alignment, reducing fatigue and helping you maintain focus through extended sessions.
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Adjustable Backrest
Customize the recline angle to your preference—from upright focus to relaxed contemplation—with smooth, precise adjustment.
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Built-In Lumbar Support
Integrated lower-back support cradles the lumbar region, actively alleviating strain during prolonged sitting.
Signature Innovation
3D Multi-Directional Armrests
The HKM-538835 features advanced 3D armrests that adjust in three independent axes—vertically up to approximately 4 inches (10 cm), forward/backward up to 2 inches (5 cm), and with a swivel range of approximately 30°. This multi-directional freedom lets you dial in the precise support your forearms, wrists, and shoulders need. By reducing static muscle tension around the neck and shoulder girdle, these armrests help prevent the cumulative strain that leads to discomfort during marathon work sessions.
Spinal Care
Adjustable Backrest with Contoured Lumbar Support
The backrest reclines through a smooth range of approximately 90° to 135°, accommodating everything from intense keyboard work to relaxed reading or brief moments of reflection. The built-in lumbar support is anatomically contoured to match the natural curvature of the human spine, distributing pressure evenly across the lower back. By maintaining proper pelvic positioning, it helps mitigate the forward-slouching tendency that plagues desk workers, promoting circulation and reducing intervertebral disc pressure over hours of continuous use.
Materials & Durability
Genuine Leather, Built to Endure
Genuine leather is prized in fine furniture for its breathability, tactile warmth, and ability to develop character over time. Unlike synthetic alternatives that can crack or peel, quality genuine leather remains supple with basic care. The HKM-538835 pairs this premium upholstery with a robust internal frame engineered for daily use. The dense foam cushioning beneath the leather is formulated to resist sagging, retaining its supportive loft far longer than standard polyurethane foams. Every stitch, seam, and weld point has been reinforced to meet the demands of a professional environment where the chair may see 8 to 12+ hours of continuous daily use.
Why Ergonomics Matters
The science of sitting well—and how the HKM-538835 addresses each critical factor.
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Pressure Distribution
A well-designed chair spreads body weight across the seat and backrest, reducing peak pressure points that can compress soft tissue and impede blood flow.
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Dynamic Sitting
The adjustable backrest encourages subtle micro-movements throughout the day, keeping spinal discs nourished and muscles engaged rather than locked in one position.
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Postural Alignment
Lumbar support that matches the spine's natural lordotic curve helps maintain neutral pelvis positioning, reducing forward head posture and upper back rounding.
Designed for Your Work Style
Three common professional scenarios where the HKM-538835 truly excels.
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Deep Focus Sessions
When you're locked into complex analysis or creative flow, the chair fades into the background—silent support that never distracts.
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Video Conferencing
The genuine leather's refined appearance projects professionalism on camera, while the upright posture keeps you looking alert and engaged.
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Executive Office
A statement piece that signals attention to quality. The chair's presence complements wood, glass, and metal office aesthetics with understated elegance.
Technical Specifications
Key measurements and capabilities of the HKM-538835.
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300 lbs
Weight Capacity (136 kg)
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18–22 in
Seat Height Range (46–56 cm)
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90°–135°
Backrest Recline
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~4 in
Armrest Vertical Travel (~10 cm)
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~2 in
Armrest Fore-Aft Travel (~5 cm)
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~30°
Armrest Swivel Range
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21 in
Seat Width (53 cm)
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19 in
Seat Depth (48 cm)
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~55 lbs
Net Weight (~25 kg)
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44–48 in
Overall Height (112–122 cm)
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Genuine
Leather Grade
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Class 4
Gas Lift Cylinder
All specifications are approximate. Actual values may vary slightly due to manufacturing tolerances.
Frequently Asked Questions
Everything you need to know about the HKM-538835.
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Is genuine leather easy to maintain?
Yes. Genuine leather requires only occasional care to remain beautiful for years. We recommend wiping the surface with a clean, slightly damp microfiber cloth every few weeks to remove dust and oils. For deeper conditioning, apply a quality leather conditioner once or twice per year. Avoid placing the chair in direct sunlight for extended periods, as UV exposure can gradually fade natural leather. With basic maintenance, genuine leather develops a distinguished patina that enhances its character over time.
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How does the 3D armrest adjustment work?
The 3D armrests on the HKM-538835 offer three independent adjustment axes. You can raise or lower the armrests vertically through approximately 4 inches (10 cm) of travel using the side-mounted lever. Slide them forward or backward by about 2 inches (5 cm) to match your forearm length and desk proximity. Finally, the pad itself swivels roughly 30° inward or outward, letting you find the most natural angle for your wrists during typing or mouse use. Each adjustment locks securely once set.
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What is the weight capacity of this chair?
The HKM-538835 is engineered to support up to 300 lbs (136 kg). The heavy-duty Class 4 gas lift cylinder, reinforced steel base, and robust internal frame work together to ensure stability and longevity across the full weight range. The chair has been cycle-tested to exceed industry durability standards for commercial-grade office furniture.
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Does the lumbar support adjust independently?
The built-in lumbar support is integrated into the backrest contour and provides consistent, anatomically shaped support throughout the recline range. While it is not a separate adjustable piece, its fixed position has been carefully calibrated based on anthropometric data to accommodate a broad spectrum of body types. The curvature naturally aligns with the lumbar lordosis of most adult users, and the depth of support increases slightly as you recline, which mirrors the spine's changing needs across different postures.
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Is assembly required, and what tools are needed?
Yes, some assembly is required. The HKM-538835 ships in one compact box with all hardware, an illustrated instruction manual, and the necessary Allen key included. Most users complete assembly in approximately 20–30 minutes. The process involves attaching the base, gas cylinder, seat mechanism, backrest, and armrests—all bolts align precisely thanks to tight manufacturing tolerances. No additional tools are needed.
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Can this chair be used on hardwood floors?
Absolutely. The HKM-538835 is equipped with smooth-rolling, quiet polyurethane casters that are gentle on hardwood, laminate, tile, and vinyl flooring. They glide silently and resist marking or scratching. For added floor protection on particularly delicate surfaces, we recommend using a chair mat—though most users find the standard casters perfectly suitable without one.
Purchase with Confidence
Every HKM-538835 order is backed by comprehensive coverage.
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Free Shipping on All Orders
Complimentary standard delivery to your doorstep. No minimum purchase required, no hidden fees—ever.
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180 Days Purchase Protection
A full six months of coverage against manufacturing defects. If something goes wrong, we make it right.
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30 Days Money-Back Guarantee
Not satisfied? Return it within 30 days for a full refund. Simple, straightforward, no questions asked.
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24 Months Warranty Service
Two full years of warranty coverage on all mechanical components, including the gas lift, mechanism, and casters.
HKM-538835 — Elevate your workspace with uncompromising comfort and timeless style.
Every product we offer includes a 180-day purchase protection plan at no additional cost. This coverage extends beyond a standard warranty, reflecting our confidence in product quality and our ongoing commitment to your satisfaction.
The protection plan is designed to provide practical help in real-world situations. Whether you encounter a manufacturing issue, a performance problem, or an unexpected accident, our team is ready to assist with clear, fair solutions.
What Is Covered
Manufacturing Defects
We replace items with material or workmanship flaws at no charge.
Performance Failures
Free repair or replacement if the product fails under normal use.
Accidental Damage
One-time courtesy replacement at a reduced price.
Zero Hidden Fees
All shipping costs for replacements and returns are covered.
How to File a Claim
How This Differs from the Warranty
The 180-day purchase protection includes accidental damage and performance failures that are typically not covered by a standard warranty. It provides an additional layer of support during the first six months after purchase, giving you greater confidence and peace of mind.
We want you to be completely satisfied with your purchase. If for any reason you are not fully happy, you may return your item within 30 days of delivery for a full refund. No lengthy forms, no unnecessary questions.
Our return policy is built on a simple principle: if the product is not right for you, we will make it right. We understand that online shopping involves trust, and we work hard to earn that trust with every order.
Return Eligibility
30-Day Window
Request a return within 30 days of delivery.
Original Condition
Unworn or unused, with tags and original packaging.
Proof of Purchase
A receipt or order number is required.
Fast Refund
Refund processed within 10 business days.
How to Start a Return
Returns & Exchanges Overview
Damages & Exchanges
Please inspect your order as soon as it arrives. If the item is defective, damaged, or incorrect, contact us immediately so we can evaluate the issue and make it right. For exchanges, the fastest option is to return the original item and place a new order for the replacement.
We believe in the quality of our products, and we want you to share that confidence. Every product is backed by a 24-month warranty covering all structural and functional components, including zippers, buckles, straps, and fabric integrity.
The warranty is designed to be simple and accessible. You only need your proof of purchase to begin a claim, and our team will assess the issue promptly. If a manufacturing issue arises, we will make it right.
What the Warranty Covers
Comprehensive Coverage
Every part warranted for two full years.
Free Repair or Replacement
Whichever is faster, at no cost to you.
Quick Turnaround
Claims assessed within 1 business day.
Transferable
Warranty follows the product, not the owner.
How to File a Warranty Claim
Every order ships free—no minimums, no hidden fees. We currently deliver across the United States and are actively working to expand to more countries. We partner with reliable U.S. courier services to ensure your order arrives safely and on time.
Our delivery process is designed for transparency. From the moment you place your order to the moment it reaches your door, you receive clear updates at every stage. We carefully inspect each product before dispatch, and we provide tracking information as soon as your order ships.
Our U.S. Shipping Partners
USPS
Official national carrier with nationwide coverage.
UPS
Fast and reliable ground and express shipping.
FedEx
Express delivery with real-time tracking.
DHL eCommerce
Efficient parcel delivery for e-commerce shipments.
Delivery Process
Delivery Time Summary
Cancellations & Taxes
You may cancel your order at any time before it ships. All product prices include applicable taxes, and there are no additional VAT or customs fees for orders delivered within the United States.
Whether you have a question, need help with an order, or just want some advice, our support team is available around the clock. We don't just respond to messages—we work with you to find real solutions that fit your needs.
Our support specialists are trained to handle a wide range of requests, from product recommendations to technical troubleshooting. No matter the question, you can expect a professional and friendly response.
How We Can Help
Product Guidance
Our experts help you choose the right product.
Order Assistance
Modify orders, track shipments, or speed up delivery.
Warranty & Returns
Start claims or returns quickly and easily.
Technical Troubleshooting
Step-by-step solutions for product issues.
Contact Information
24/7 Phone
+1 (209) 280-3200
support@hekomart.com
Address
3401 Dale Rd, Modesto, CA 95356
Support Hours
Available 24 hours a day, 7 days a week