---
product_id: 510079670
title: "Office Chair Ergonomic Desk Chair-400lbs Big and Tall Heavy Duty, Wide & Soft 3D Modeling Foam Cushion Home Office Desk Chair with Adjustable Seat Height, Executive Computer Task Chair"
brand: "luckyear"
price: "¥189676"
currency: JPY
in_stock: true
category: "Luckyear"
url: https://www.desertcart.jp/products/510079670-office-chair-ergonomic-desk-chair-400lbs-big-and-tall-heavy
store_origin: JP
region: Japan
---

# 400 lbs heavy-duty support 21-inch wide 3D molded foam cushion breathable mesh back for airflow Office Chair Ergonomic Desk Chair-400lbs Big and Tall Heavy Duty, Wide & Soft 3D Modeling Foam Cushion Home Office Desk Chair with Adjustable Seat Height, Executive Computer Task Chair

**Brand:** luckyear
**Price:** ¥189676
**Availability:** ✅ In Stock

## Summary

> 🖥️ Elevate your workspace comfort — because your hustle deserves the best seat in the house!

## Quick Answers

- **What is this?** Office Chair Ergonomic Desk Chair-400lbs Big and Tall Heavy Duty, Wide & Soft 3D Modeling Foam Cushion Home Office Desk Chair with Adjustable Seat Height, Executive Computer Task Chair by luckyear
- **How much does it cost?** ¥189676 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/510079670-office-chair-ergonomic-desk-chair-400lbs-big-and-tall-heavy)

## Best For

- luckyear enthusiasts

## Why This Product

- Trusted luckyear brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Stay Cool, Stay Focused:** Premium breathable PE polyester mesh back promotes airflow, preventing overheating during intense work sessions.
- • **Cloud-Like Comfort in Every Sit:** Wide 21-inch, 5.2-inch thick 3D molded foam cushion cradles your hips, reducing fatigue during marathon meetings.
- • **Effortless Setup & Reliable Support:** Quick 15-20 minute assembly with included tools and responsive 24-hour customer service ensures you’re up and running fast.
- • **Built to Endure Your Longest Workdays:** Supports up to 400 lbs with a robust alloy steel frame and BIFMA-certified base for unmatched durability.
- • **Customizable Ergonomics for Peak Productivity:** Adjustable seat height, flip-up armrests, and lumbar support let you tailor your posture for all-day comfort.

## Overview

The Luckyear Ergonomic Office Chair combines heavy-duty durability with premium comfort, featuring a 400 lbs weight capacity, wide 3D molded foam cushion, and breathable mesh back. Designed for professionals who demand ergonomic support and style, it offers adjustable height, lumbar support, and flip-up armrests. Easy to assemble and backed by responsive customer service, this chair is built to keep you comfortable and productive through long workdays.

## Description

Buy Luckyear Office Chair Ergonomic Desk Chair-400lbs Big and Tall Heavy Duty, Wide & Soft 3D Modeling Foam Cushion Home Office Desk Chair with Adjustable Seat Height, Executive Computer Task Chair: Home Office Desk Chairs - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

## Features

- 400LBS Heavy Duty Office Chair & Easy to Install -The office chair, featuring a heavy-duty and durable base, can support up to 400 pounds for adults. It comes with a comfortable ergonomic design, all necessary hardware, and tools for assembly. Most people can complete the installation within 15 to 20 minutes by following our assembly video or instructions
- Molded Sponge Cushion Office Chair-This office chair features a 21.06-inch wide and 5.2-inch thick sponge cushion that is both widened and molded for added comfort. It provides protection and support for our hips, ensuring hip health even during extended periods of work. The chair also has a breathable mesh back that promotes good air circulation, keeping you cool even when sitting for long periods.
- Breathable Mesh Back-The back of the office chair is crafted from a breathable PE polyester elastic mesh, designed to maintain your comfort and coolness. This premium mesh is resistant to wear and deformation, ensuring optimal airflow and keeping you cool even during prolonged periods of sitting.
- Extra Comfy and Solid Desk Chair-A high-resilience molded sponge cushion and a skin-friendly ventilated mesh backrest cover bring a soft and comfortable sitting experience. The ergonomic office chair, whose base has passed BIFMA certification, features a 4-level SGS-certified gas cylinder, ensuring excellent durability and bearing capacity.
- Excellent Customer Service-If you encounter any issues, such as missing parts, product damage, or other unsatisfactory concerns, please contact us through desertcart's customer service. We will respond to your inquiry within 24 hours and actively work to resolve the issue.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BRY78N5V |
| Additional Features | Adjustable Height, Adjustable Lumbar, Ergonomic |
| Age Range Description | Adult |
| Arm Height | 8 inches |
| Arm Style | 15° Left & Right Rolled, Flip-up Arms |
| Assembly Instructions Description | Instructions provided, but not detailed. |
| Back Style | mesh back |
| Best Sellers Rank | #304,015 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #720 in Home Office Desk Chairs |
| Brand | Luckyear |
| Brand Name | Luckyear |
| Chair Backrest Width | 20.67 inches |
| Color | Black |
| Cushion Style | Boxed Edge |
| Customer Reviews | 4.6 out of 5 stars 394 Reviews |
| Fill Material | 3D Molded Foam Cushion |
| Finish Types | Painted |
| Form Factor | office chair |
| Frame Material Type | Metal |
| Furniture Base Movement | Swivel |
| Furniture Finish | Black |
| Included Components | High elastic nylon mesh backrest, PU Arm Pad, Smooth Caster, Soft Sponge Molded Cushion |
| Indoor Outdoor Usage | Indoor |
| Item Depth | 20.7 inches |
| Item Dimensions | 20.7 x 24.62 x 44.3 inches |
| Item Dimensions D x W x H | 20.7"D x 24.62"W x 44.3"H |
| Item Type Name | Office Chair, Ergonomic Desk Chair with Wide & Soft Sponge Molded Cushion, 400LBS Heavy Mesh Mid-Back Home Office Desk Chair with Adjustable Seat Height, Executive Computer Task Chair |
| Item Weight | 35.9 pounds |
| Leg Style | Tapered Leg |
| Manufacturer | Luckyear |
| Manufacturer Part Number | home-office-desk-chairs |
| Manufacturer Warranty Description | 5 year. |
| Material | 3D Molded Foam Cushion, Alloy Steel , Nylon Frame |
| Material Type | 3D Molded Foam Cushion, Alloy Steel, Nylon Frame |
| Maximum Weight Recommendation | 400 pounds |
| Model Name | 908BM |
| Model Number | 908BM |
| Number of Items | 1 |
| Number of Packs | 1 |
| Pattern | Solid |
| Product Care Instructions | Wipe Clean |
| Product Dimensions | 20.7"D x 24.62"W x 44.3"H |
| Reclining Position Count | 2 |
| Recommended Uses For Product | Gaming, Office, Reading |
| Room Type | Office, Office Reception, Study Room |
| Seat Depth | 20.7 inches |
| Seat Height | 17.6 inches |
| Seat Length | 20.3 inches |
| Seat Material | 3D Molded Foam |
| Shape | L-Shaped |
| Size | 3'6" x 1'8" x 2'2.62" |
| Style Name | Modern |
| Subject Character | black |
| Surface Recommendation | Hard Floor |
| Theme | Task Chair, Teacher Office Chair, business office, gaming Chair |
| UPC | 768443479219 |
| Unit Count | 1 Count |
| Upholstery Fabric Type | Leather |

## Product Details

- **Brand:** Luckyear
- **Color:** Black
- **Material:** 3D Molded Foam Cushion, Alloy Steel, Nylon Frame
- **Product Dimensions:** 20.7"D x 24.62"W x 44.3"H
- **Size:** 3'6" x 1'8" x 2'2.62"

## Images

![Office Chair Ergonomic Desk Chair-400lbs Big and Tall Heavy Duty, Wide & Soft 3D Modeling Foam Cushion Home Office Desk Chair with Adjustable Seat Height, Executive Computer Task Chair - Image 1](https://m.media-amazon.com/images/I/71670VJVXjL.jpg)
![Office Chair Ergonomic Desk Chair-400lbs Big and Tall Heavy Duty, Wide & Soft 3D Modeling Foam Cushion Home Office Desk Chair with Adjustable Seat Height, Executive Computer Task Chair - Image 2](https://m.media-amazon.com/images/I/71cJsjFIXkL.jpg)
![Office Chair Ergonomic Desk Chair-400lbs Big and Tall Heavy Duty, Wide & Soft 3D Modeling Foam Cushion Home Office Desk Chair with Adjustable Seat Height, Executive Computer Task Chair - Image 3](https://m.media-amazon.com/images/I/71BRmBoGUrL.jpg)
![Office Chair Ergonomic Desk Chair-400lbs Big and Tall Heavy Duty, Wide & Soft 3D Modeling Foam Cushion Home Office Desk Chair with Adjustable Seat Height, Executive Computer Task Chair - Image 4](https://m.media-amazon.com/images/I/71MVAFLxEIL.jpg)
![Office Chair Ergonomic Desk Chair-400lbs Big and Tall Heavy Duty, Wide & Soft 3D Modeling Foam Cushion Home Office Desk Chair with Adjustable Seat Height, Executive Computer Task Chair - Image 5](https://m.media-amazon.com/images/I/718fz6LAaKL.jpg)

## Questions & Answers

**Q: Does the chair have an installation manual?**
A: Dear customers,
Hello, please check our video installation guide.
If you have any questions in the future, please contact us through the Amazon information window.
Luckyear after-sales team service

**Q: Do the arm rest adjust up and down or do they just flip?**
A: It is 4D Flip-up Armrest, that can be adjusted up and down, left and right, but left and right can face 40° outward or inward

**Q: What materials are used in this chair?**
A: Answer in the product description.

**Q: How do you get this chair to rocking function?**
A: You can recline by pulling the adjustment lever outward. Please see the operation video. (PS: The chair does not have a button to lock the back tilt function)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-10-25*