Can you help me understand the lumbar support function and other adjustment functions of this chair?

Hello, this Doro C300 ergonomic office chair incorporates a dynamic tracking system that conforms to your back as you move your upper body to adjust to the position that makes you most comfortable. This high-back office chair is also equipped with 3D armrests, and the backrest height offers four levels of elevation adjustment.

Has anyone tried this chair comfortable, how about the lumbar support?

Very comfortable, the chair is very large, tall people sitting also suitable, and their lumbar pillow can be self-adaptive adjustment, I have fallen in love with this chair.

What is the difference between this chair and your M18?

Compared to our M18, this chair has more adjustment options and a more luxurious design, such as the ultra soft 3D Armrests, more adjustable height backrests, and a dynamic lumbar support design, which better supports your waist and has a larger size and load-bearing capacity，which is more suitable for tall and big people.

I want to choose a Office chair for my newly renovated office.Is there anyone who has bought it willing to share the visual effect of the real object?

I am glad to share with you that I purchased this chair a week ago and placed it in my study. The actual product has a more textured texture, and its exterior design can truly fit every usage scenario. Its functions are absolutely stunning, and I work late without any pain in my waist (solving the problem that has been bothering me for a long time).

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SIHOO Doro C300 Ergonomic Office Chair with Ultra Soft 3D Armrests | Dynamic Lumbar Support for Home Office Chair, Adjustable Backrest Desk Chair, Swivel Big & Tall Computer Chair, Black

SIHOO Doro C300 Ergonomic Office Chair with Ultra Soft 3D Armrests | Dynamic Lumbar Support for Home Office Chair, Adjustable Backrest Desk Chair, Swivel Big & Tall Computer Chair, Black

Product ID: 534917752

Details

Brand
SIHOO
Color
Black
Material
Mesh
Product Dimensions
15.35"D x x
Size
Pack of 1

🔄360° swivel with smooth tilt

🪑Ergonomic 3D adjustable armrests

🛡️BIFMA & TUV safety certified

4240.44 DT

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Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🖥️ Elevate your workday with SIHOO’s smart ergonomic throne!

DYNAMIC LUMBAR SUPPORT - Auto-adaptive lumbar system cradles your lower back, reducing fatigue during marathon work sessions.
BUILT TO LAST CERTIFIED SAFE - Premium stainless steel frame with SGS Class 4 gas lift and multiple safety certifications for peace of mind.
TAILORED COMFORT IN EVERY ANGLE - 3D adjustable headrest & armrests adapt perfectly to your posture for all-day support.
EFFORTLESS MOVEMENT FLEXIBILITY - 360° swivel and intelligent gravity tilt mechanism with weight-adjustable resilience for seamless transitions.
DESIGNED FOR BIG TALL PROFESSIONALS - Generous seat dimensions and 150kg weight capacity ensure comfort without compromise.

The SIHOO Doro C300 is a cutting-edge ergonomic office chair featuring ultra-soft 3D adjustable armrests, dynamic auto-adaptive lumbar support, and a 360° swivel with intelligent gravity tilt. Designed for big & tall users, it combines breathable mesh materials with a robust stainless steel frame, meeting top-tier safety certifications (BIFMA, TUV, SGS). Perfect for professionals seeking health-conscious comfort and durability in their home or office workspace.

Specifications

ASIN	B0C3T865C2
Additional Features	Adjustable,Durable,Flexible
Age Range Description	Adult
Arm Height	31.7 inches
Arm Style	With arms
Assembly Instructions Description	Assembly required. Follow the instructions provided to set up the chair.
Back Style	Solid Back
Best Sellers Rank	#71,837 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #203 in Home Office Desk Chairs
Brand Name	SIHOO
Chair Backrest Width	21.26 inches
Color	Black
Customer Reviews	4.2 4.2 out of 5 stars (1,322)
Fill Material	Mesh
Finish Types	Plastic
Form Factor	Ergonomic
Frame Material Type	Stainless Steel
Furniture Base Movement	Swivel
Included Components	Arm Pad
Indoor Outdoor Usage	Indoor
Item Depth	15.35 inches
Item Dimensions	15.35 x 23.23 x 30.31 inches
Item Dimensions D x W x H	15.35"D x 23.23"W x 30.31"H
Item Weight	23.1 kg
Leg Style	Tapered Leg
Manufacturer	SIHOO
Manufacturer Part Number	DORO-C
Material Type	Mesh
Maximum Weight Recommendation	150 kg
Model Name	C-SERIES
Model Number	A3-C500
Pattern	Solid
Product Care Instructions	Wipe Clean
Reclining Position Count	3
Recommended Uses For Product	Office
Room Type	Office
Seat Back Interior Height	17.72 inches
Seat Depth	16.54 inches
Seat Height	18.9 inches
Seat Material	Mesh
Shape	S-Shape
Size	Pack of 1
Style Name	Modern
Surface Recommendation	Hard Floor
Unit Count	1 Count

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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4240.44 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Tunisia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Imran F.

Very reliable shop with genuine products. Will definitely buy again!

2 weeks ago

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Great price for an authentic product. Fast international shipping too!

3 weeks ago

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