Fast Shipping Within 7 Days | 3 Years Warranty

(NEW) M59AS Ergonomic Office Chair with Dual-Section Backrest

4.8
Rated 4.8 out of 5 stars
79 Reviews
Sale price $199.99 Regular price $239.99

Color

Benefits

  • Dual-section backrest for comprehensive back support and posture adaptability
  • 3D-adjustable flip-up armrests for customizable arm support and space-saving convenience
  • Dual-jointed headrest for precise neck support and comfort
  • Saddle-shaped seat cushion for enhanced comfort during long hours
  • Full premium mesh design for breathability, support, and easy maintenance
  • Integrated coat hanger for added practicality
  • Endorsed by industry experts for innovative design and functionality

Promises

  • 30-Day Worry-Free Trial: Try the chair for 30 days. If it’s not for you, feel free to return it.
  • 3-Year Warranty: Enjoy lasting comfort and peace of mind with our 3-year warranty.
  • Fast Shipping: Receive your chair in just 5-7 days, in US and CA.
  • Satisfaction Guarantee: For any issues, contact support@sihoooffice.com for prompt assistance and guaranteed satisfaction.

Payment methods

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How to choose a right ergonomic office chair?

Check out our buying guide for you!

"Take a break—recline, relax, and recharge for your next task."

Sihoo M59AS

The Sihoo M59AS dynamic lumbar support adjusts to your lower back, offering constant comfort whether you sit still or move throughout the day.

sihoo m59as Dual-section backrest for whole back comfort

Dual-section backrest for whole back comfort

The Sihoo M59AS features a dual-section backrest that provides full back support. The top section offers ample support, while the dynamic lumbar support adjusts to your natural curve for all-day comfort.

m59as Double-jointed headrest, extra-precise neck support

Double-jointed headrest, extra-precise neck support

The Sihoo M59AS headrest adjusts to fit the curve of your neck, offering broad support for comfort. With its dual-joint design, you can easily adjust the height and angle for a perfect fit.

How M59AS Chair Helps?

  • Office chair with adjustable armrests for petite users

    Bigger, wider, softer arm support in 3D.

    Sihoo M59AS fits any workspace with flip-up armrests that tuck under your desk, saving space while providing ergonomic comfort.

  • m59as Support and comfort for the entire back

    Support and comfort for the entire back.

    Sihoo M59AS has a taller, roomier backrest, offering full support for your entire back, even for taller users.

  • sihoo m59as Lay back, relax. Rewind. Take a break

    Lay back, relax. Rewind. Take a break.

    Recline in comfort on Sihoo M59AS, relax, and recharge to take on your next tasks with fresh energy and focus.

  • m59as Flexible, breathable, and durable

    Flexible, breathable, and durable.

    The Sihoo M59AS mesh blend of PE and polyester offers breathability, support, durability, and easy maintenance.

Specifications

  • Overview

    The Sihoo M59AS offers all-day comfort with its breathable mesh design and customizable features. Its dual-section backrest, adjustable armrests, and dynamic lumbar support provide tailored support for a truly ergonomic experience.

    Name: Sihoo M59AS Ergonomic Chair

    General Dimensions: 28"W x 28"D x 45"-53"H

    Product Weight: 36.7 lbs

    Assembly: Requires assembly

    Fabric: PE + polyester

    Materials: ‎Aluminum, Mesh

    Maximum load: 300 lbs

    Warranty: (3) years warranty

  • sihoo m59as Specifications

    Chair back lifting height: 44.69" - 52.95"

    Seat depth: 17.13"

    Max hip width: 19.88"

    Maximum load: 300 lbs

    Armrests: 3D coordinated armrests (Flip it up and down, left and right, forward and backward)

sihoo m59as Ergonomic Office Chairs

@sihoo_usa

For every part of you

4.8
Rated 4.8 out of 5 stars
Based on 79 reviews
Total 5 star reviews: 62 Total 4 star reviews: 17 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
100%would recommend this product
Slide 1 selected
79 reviews
  • HX
    human X.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    April 4, 2025
    5 Stars

    The chair design is very ergonomic. The lumbar support is excellent, and the backrest curve fits my spine perfectly, ensuring a comfortable sitting posture. What I love most is the 3D armrests and headrest. Both are adjustable in terms of angle and height, so you can find the ideal position for your sitting posture. The large seat gives plenty of room for comfort, and I do not feel cramped even after sitting for extended periods. This chair has made long work sessions much more comfortable.

  • D
    Dzo
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    March 30, 2025
    5 Stars

    This chair is a perfect fit for smaller individuals. It offers full ergonomic support and high adjustability. Great materials, solid comfort, and excellent build quality.

  • BM
    Brandi M. L.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    March 30, 2025
    5 Stars

    This chair is really nice. It was not too difficult to assemble, with all hardware clearly marked and separated. The instructions were decent, but not perfect. The chair is a bit firm, but I noticed that my lower back did not hurt after sitting in it all day. The adjustable headrest is a great feature, and the seat height is also easily adjustable. The armrests can flip up out of the way, making it easier to push the chair under the desk or to not use them at all. Overall, I definitely prefer this chair over my old one. I would recommend it.

  • GK
    Gregory K.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    January 22, 2025
    5 Stars

    I was surprised by just how firm the support in this chair was without it being hard as a rock or comfortable to sit in long term.I have a desk job that often has me tied to my chairs for hours at a time. In that situation it means I need ti make sure any chair I have supports my lower back and this one does that very well.

  • F
    Farr
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    January 20, 2025
    5 Stars

    I recently got the SIHOO Ergonomic Office Chair, and I must say, it is incredibly comfortable! The design is perfect for long sitting sessions, and the armrests provide excellent support during my workdays. However, I did encounter an issue with the hydraulic pump, which does not seem to work properly. I tried taking it apart and reassembling it, but it still does not function as expected. As someone who is taller, this has made it a bit uncomfortable for long periods, since I can not adjust the chair height.

    Despite the hydraulic issue, the chair is still quite comfortable, and if that was resolved, it would be a perfect fit for my needs. I would recommend it, but just be aware of potential quality control issues.