SIHOO B300 Pro Ergonomic Office Chair 3D in Dark Black

30% OFF

Amazon Promo code

SIHOO B300 Pro Ergonomic Office Chair 3D Amazon Promo Code N6XUCFK3: 30% Off

Active code · Last checked Oct 23, 2026 by the AmazonHaul team · First listed Oct 19, 2026

30% OFF with promo code at checkout

Amazon promo code N6XUCFK3

AmazonHaul may earn a commission on qualifying purchases. Prices and discounts are set by the seller and can change at any time – the price in your Amazon cart is the one that counts.

Apply Amazon promo code N6XUCFK3 at checkout to take 30% off the SIHOO B300 Pro Ergonomic Office Chair 3D. If the listing also shows a clip-on coupon, clip it before checkout. Codes are limited – if it stops working, the seller has usually released a new one and this page updates.

SIHOO deals Best office chair Home & Kitchen

Amazon listing: SIHOO B300 Pro Ergonomic Office Chair with Footrest, 4D Lumbar Support | Adjustable Backrest ＆Seat Depth, 6D Flip-Up Armrests, 3D Wide Headrest, Breathable Mesh, for Long Work Sessions, Dark Black

30% off · View Deal on Amazon ↗

The SIHOO B300 Pro Ergonomic Office Chair 3D is a full-featured mesh chair with a footrest, and promo code N6XUCFK3 takes 30% off. The listing also shows a 30% clip coupon. This deal covers the Dark Black version.

Adjustability is the reason to look at it. The spring-assisted lumbar support moves up and down and glides forward on its own, while the backrest raises independently so the lumbar lands where your lower back meets the chair. Seat depth adjusts for different leg lengths, and a retractable footrest pulls out for breaks. A weight-sensing recline sets resistance automatically, so there is no tension knob to tune. Up top, an oversized 3D headrest cradles the neck, and the 6D armrests swivel, slide, raise and fold upward. SIHOO also lists 30-day returns and a 3-year warranty.

If you are comparing the best office chairs amazon has for long workdays, this one deserves a spot on your list. Clip the coupon, then apply the SIHOO B300 Pro ergonomic office chair discount code N6XUCFK3 during checkout.

On this page

SIHOO B300 Pro Ergonomic Office Chair 3D review: pros and things to check
Why this SIHOO deal is worth it
SIHOO B300 Pro Ergonomic Office Chair 3D deal facts
SIHOO B300 Pro Ergonomic Office Chair 3D photos
How to use the SIHOO B300 Pro Ergonomic Office Chair 3D promo code N6XUCFK3
Key features of the SIHOO B300 Pro Ergonomic Office Chair 3D
SIHOO B300 Pro Ergonomic Office Chair 3D: what you get
SIHOO B300 Pro Ergonomic Office Chair 3D at a glance
Who should buy it (and who should skip it)
SIHOO B300 Pro Ergonomic Office Chair 3D vs similar office chair deals

SIHOO B300 Pro Ergonomic Office Chair 3D review: pros and things to check

What we like

30% off with code N6XUCFK3
Spring-assisted adjustable lumbar support
Independently height-adjustable backrest
Adjustable seat depth
Pull-out retractable footrest

Things to check

Seller codes often cover one size or color only
Codes are limited-use and can end without notice
Features listed here come from the seller's Amazon listing – we have not tested every product hands-on

Why this SIHOO deal is worth it

Promo code N6XUCFK3 takes 30% off a chair with adjustable lumbar, seat depth, backrest height and footrest.
A 30% clip coupon appears too, and the order summary will confirm whether both apply.
The 6D armrests rotate, slide, lift or flip up out of the way as you switch tasks.
The weight-sensing recline skips manual tension tuning, so leaning back feels natural right away.
Listed coverage includes 30-day returns and a 3-year warranty for extra peace of mind.

Check Today's Active Deals on Amazon Amazon's deals page – lightning deals, coupons and price drops, updated all day.

SIHOO B300 Pro Ergonomic Office Chair 3D deal facts

Deal type	Promo code
Discount	30% off with code N6XUCFK3 + 29% coupon
How good is it?	Bigger discount than 8% of the 11,016 Home & Kitchen deals we track (category average: 44% off)
Brand	SIHOO – 12 deals tracked by AmazonHaul
Amazon rating	4.5 out of 5 (450 ratings, as of Oct 23, 2026)
First spotted	Oct 19, 2026
Where to buy	Amazon.com (sold through the regular listing, normal Amazon returns)

SIHOO B300 Pro Ergonomic Office Chair 3D photos

SIHOO B300 Pro Ergonomic Office Chair 3D – Spring-assisted adjustable lumbar support — Spring-assisted adjustable lumbar support

SIHOO B300 Pro Ergonomic Office Chair 3D – Independently height-adjustable backrest — Independently height-adjustable backrest

SIHOO B300 Pro Ergonomic Office Chair 3D – Adjustable seat depth — Adjustable seat depth

SIHOO B300 Pro Ergonomic Office Chair 3D – Pull-out retractable footrest — Pull-out retractable footrest

SIHOO B300 Pro Ergonomic Office Chair 3D – Weight-sensing recline mechanism — Weight-sensing recline mechanism

SIHOO B300 Pro Ergonomic Office Chair 3D – 6D flip-up armrests — 6D flip-up armrests

Product photos from the Amazon listing – tap any photo to see it on Amazon. Colors and included items can differ by variant – check the listing before you order.

Tap Get this deal on Amazon above – it opens the exact listing the code was issued for.
Choose the size, color or pack the code covers and add it to your cart. If the listing shows a Save 30% promotion box, the discount may apply by itself.
At checkout, paste N6XUCFK3 into Gift card or promotion code, tap Apply, and confirm the discount in the order total before you place the order.

Step-by-step guide with screenshots →

Key features of the SIHOO B300 Pro Ergonomic Office Chair 3D

Spring-assisted adjustable lumbar support
Independently height-adjustable backrest
Adjustable seat depth
Pull-out retractable footrest
Weight-sensing recline mechanism
6D flip-up armrests
Oversized 3D headrest

From the Amazon listing. Specs can change by variant – the listing is always the final word.

SIHOO B300 Pro Ergonomic Office Chair 3D: what you get

Spring-assisted lumbar you can raise, lower and slide forward on its own
Backrest that raises independently, plus seat depth that adjusts to leg length
Pull-out retractable footrest for stretching your legs during reclined breaks
Weight-sensing recline that matches resistance to your body weight
Oversized 3D headrest plus 6D armrests that swivel, slide, raise and fold up
Breathable Dark Black mesh, backed by a listed 3-year warranty plus 30-day returns

SIHOO B300 Pro Ergonomic Office Chair 3D at a glance

Brand	SIHOO
Product type	Office Chair
Category	Home & Kitchen
Color	Dark Black
Size	Pack of 1
Material	Mesh
Amazon promo code	N6XUCFK3 (active)
Discount	30% off
ASIN	B0HN546ZH3
Last checked	Oct 23, 2026

Who should buy it (and who should skip it)

This chair is for remote workers, gamers, students and anyone spending long hours at a desk who wants to fine-tune lumbar position, seat depth, armrests and headrest. The footrest and recline add a place to unwind between tasks. Skip it if you prefer a simple chair with few controls, or if your workspace is too tight for a reclining chair with a pull-out footrest.

SIHOO B300 Pro Ergonomic Office Chair 3D vs similar office chair deals

Product	Discount	Promo code	Stand-out feature
SIHOO B300 Pro Ergonomic Office Chair 3D (this deal)	30% off	Yes	Spring-assisted adjustable lumbar support
SIHOO B300 Pro Ergonomic Office Chair 3D Light Grey	27% off	Yes	Built-in footrest for breaks
SIHOO B300 Pro Ergonomic Office Chair Without 3D	30% off	Yes	4D adjustable lumbar support
SIHOO B300 Pro Ergonomic Office Chair Without 3D Grey	27% off	Yes	Spring-assisted 4D lumbar support
SIHOO Doro C300 Pro V2 Ergonomic Office 8D Jet Black	20% off	Yes	Built-in footrest edition
SIHOO Doro C300 Pro V2 Ergonomic Office 8D	20% off	Yes	DynaCore full-body support system

Discounts as last checked by our team; open each page for the current code.

Before you buy the SIHOO B300 Pro Ergonomic Office Chair 3D: quick tips

Set the seat depth first, then raise the backrest so the lumbar sits at your lower back.
Adjust the 3D headrest during a video call or reading session to find the right neck position.
Check the listing dimensions and recommended user height range before ordering, especially for very short or tall users.
Leave space behind the chair for the recline and in front for the footrest when planning your office layout.

Code	Discount	Status
N6XUCFK3	30% off	Active – checked Oct 23, 2026

We add every new code for this product here, so you can see how often the seller runs promotions.

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Helpful resources before you buy the SIHOO B300 Pro Ergonomic Office Chair 3D

Office chair – background and how it works – Wikipedia
How to redeem a promotional code – Amazon Help
Returns and refunds – Amazon Help
Energy-efficient (ENERGY STAR) products – ENERGY STAR
Online shopping tips – FTC Consumer Advice

Independent sources – we are not affiliated with them.

SIHOO B300 Pro Ergonomic Office Chair 3D video review

SIHOO B300 Pro Ergonomic Office Chair Review – by Ellie on YouTube. We are not affiliated with the channel.

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Did code N6XUCFK3 work for you?

Checked by the AmazonHaul Deals Team · last checked Oct 23, 2026

We find codes from sellers, brand promotions and our Facebook groups, open each Amazon listing to confirm the discount, and mark codes as ended when members report them. Product details come from the Amazon listing – we have not tested every product hands-on. About us · How we earn

Does the SIHOO B300 Pro have a footrest?

Yes. It has a retractable footrest that pulls out when you want to recline and stretch your legs, then tucks away when you get back to work. Combined with the weight-sensing recline, it turns the chair into a spot for short breaks between tasks.

How does the lumbar support work on the SIHOO B300 Pro?

The spring-assisted lumbar moves up or down and also slides forward on its own. Because the backrest also raises and lowers on its own, you can position the lumbar where your lower back meets the chair rather than adapting to a fixed shape.

What warranty comes with the SIHOO B300 Pro office chair?

SIHOO lists a 3-year warranty on each chair along with 30-day hassle-free returns. Keep your order details handy in case you need to reach out, and review the current terms on the product page before buying, since policies can be updated.

Does code N6XUCFK3 work with the clip coupon?

Clip the 30% coupon on the B300 Pro listing, then enter N6XUCFK3 in the promotional code box at checkout. Whether the seller allows them to combine varies by offer, so look at the order summary and make sure the discounts you expect are listed before confirming.

Is N6XUCFK3 still working?

It was active when we last checked on Oct 23, 2026. Seller codes usually run 24–72 hours or until a set number of uses is gone, so apply it soon. Our team marks a code as ended as soon as members report it.

Is there a SIHOO B300 Pro Ergonomic Office Chair 3D coupon or discount code?

Yes – N6XUCFK3 is the current Amazon promo code (30% off). Amazon calls it a promotion code; it works the same way as a coupon or discount code at checkout, and the listing also has a 29% clip-on coupon.

Do I need Amazon Prime to use it?

No. Promo codes work for any Amazon account unless the promotion box on the product page says Prime-only.

Why didn't the code apply?

Usually a different size or color than the one the code covers, a one-per-account limit, or the code sold out. See all the fixes.

Shopping around? Compare the best office chair deals (18 codes), every SIHOO promo code, Home & Kitchen deals, Amazon Promo Codes, Premium Deals $50+ and Amazon promo codes from October 19.

As an Amazon Associate, AmazonHaul earns from qualifying purchases. Promo codes and coupons are set by sellers, can sell out or end early, and the final price is always the one shown in your Amazon cart.

SIHOO B300 Pro Ergonomic Office Chair 3D Amazon Promo Code N6XUCFK3: 30% Off