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Sihoo M59AS Space-Saving Ergonomic Office Chair with Flip-Up Arms

4.8
Rated 4.8 out of 5 stars
116 Reviews
Sale price $239.99 Regular price $449.99
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 Free Returns.: 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_us@sihoo.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: 330 lbs

    Warranty: (3) years warranty

  • Chair back lifting height: 44.69" - 52.95"

    Seat depth: 17.13"

    Max hip width: 19.88"

    Maximum load: 330 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 116 reviews
Total 5 star reviews: 95 Total 4 star reviews: 21 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
100%would recommend this product
Slide 1 selected
116 reviews
  • CA
    CJ A.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    February 11, 2026
    5 Stars

    The product feels great. It can be adjusted to fit your needs. Installation was a breeze, everything fit nicely and was labeled. 10/10.

  • DM
    Dario M.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    February 1, 2026
    5 Stars

    This product was received as expected. I purchased it to be use in my home office

  • LA
    Leigh A.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    January 9, 2026
    5 Stars

    Wow, I did not realize how much of a difference the right chair could make for my back and neck. As a 5 ft 5 in female, this chair feels like a perfect fit. The seat size and weight capacity give me a comfortable amount of extra space on either side without feeling oversized.

    The lumbar support provides noticeable lower back relief, and the headrest supports my neck in a natural position. The armrests are also well positioned and easy to adjust, making long hours at my desk much more comfortable.

    The printed directions could be a bit clearer, but the assembly itself is manageable, and there are helpful videos available that make the process even easier. Overall, I am very pleased with how supportive and comfortable this chair is.

  • KL
    Kristin L.
    I recommend this product
    Rated 5 out of 5 stars
    September 25, 2025
    Nice desk chair

    Well made, durable and sturdy. Supportive and comfortable. Breathable material. Easy to assemble. Priced a little high in my opinion but the chair is a great chair.

  • J
    Jesse
    I recommend this product
    Rated 5 out of 5 stars
    September 16, 2025
    Outstanding Comfort & Support – Beats My Old Haworth Chair by a Mile!

    I purchased this Sihoo Ergonomic Office Chair after a recent back injury that’s forced me to spend more time sitting, and I’m genuinely impressed. From day one, the comfort and support have made a noticeable difference in my posture and pain levels.I had a few concerns after assembling it, but I reached out to the seller and was met with quick, helpful, and informative customer service. something I really appreciated.For context, I previously used a Haworth Improv HE chair for over 10 years, and this new Sihoo chair easily outperforms it in every way. My girlfriend has a True Innovations ergonomic chair from Costco in a similar price range, and while I initially liked hers, we both agree the Sihoo chair is far superior. The adjustable lumbar support is a standout feature, it offers much better customization for different body types and sitting styles. Another huge plus: the breathable mesh back and seat. I tend to sweat easily, especially when seated for long periods, and the mesh design keeps things cool and comfortable throughout the day. Highly recommend this chair to anyone dealing with back issues or looking to upgrade their home office setup. Excellent value for the price!