Save extra 10% with code "Summer"

Save extra 10% with code "Summer"
  • Adaptive Thoracic support】📢- The ergonomic office chair offers passive adaptive thoracic support pads.
  • 【Adjustable 3D Armrests & Headrest】- The home desk chair with adjustable 3D armrests allows you to find the perfect height and angle for arms and shoulders. 
  • 【3D Lumbar Support】- The comfortable office chair experiences optimal spinal support with the cotton lumbar cushion, providing maximum comfort.
  • 【Breathable Mesh Back & Breathable Mesh Seat】- To keep you cool, the ergonomic office chair backrest and seat are designed for maximum airflow, woven for strength, and BIFMA tested for durability.
  • 【Premium Quality Assurance & Multi-Surface Casters with Quiet Roll】
  • 【Easy to Install & 3 Years Warranty】

Logicfox Ergonomic Chair Ultra

Out of Stock
$249.00 Regular price $299.00 Sale priceSave $50.00

31.5" L x 31.5" W x 46" - 49" H

Special Ergonomic Cervical and Thoracic Support Pad.

Bodies of all sizes: 5’2” - 6’2”; up to 330 lbs. Ergonomic chair ultra delivers supreme comfort, specifically designed to suit the contours of your body.

Encouraging great posture with up to 11 points of adjustments:

  • Adjustable 3D lumbar support cushion height (Height, Depth, Rotation)
  • Adjustable 2D headrest (Height & Rotation)
  • Adjustable seat height
  • Adjustable seat tilt (90-130°)
  • Adjustable tilt tension
  • Adjustable 3D PU armrest (Height, Depth, Rotation)

The Logicfox ergonomic chair ultra is covered by 3-year warranty. We offer a 30-day trail, if you want to return it after 30 days, you can return it and just pay return shipping!

We provide free shipping for every order to the lower 48 states in the US. We do not ship to Alaska, Hawaii, and PO BOXES or APO. If you are in these areas, please contact us before ordering.

Learn more about the Logicfox Ergonomic Chair Ultra

There are 3 same ergonomic chairs but in different color, the first one is a gray one with mesh material, the second one is a purple one, the last one is a black mesh back with a sponge seat sytle.
a specific picture of how to adjust the logicfox office chair to better match your back
Lumbar & Thoracic support

Ergonomic cervical and thoracic support pad provides a passive adaptive solution that promotes balance and provides support for the upper back, neck, and head.

Posturefit Spinal Support

Experience optimal spinal support with the cotton lumbar cushion, providing maximum comfort. Regardless of different height sizes, the 3D lumbar support ensures adjustable support in various positions, including forward and backward, up and down, and rotational angles.

a picture shows us the thickness of the lumbar support pillow on logicfox office chair
adjuatble headrest of the ergonomic chair ultra
Adjustable 2D Headrest

The headrest can be adjusted in height and features a rotation function, offers both comfort and support even after you've moved away from your active working position.

Adjustable 3D Armrests

The 3D armrests can be adjusted up and down, front and rear, and can also have a 35° rotation adjustment. The multi-functional adjustable armrests with soft PU are comfortable, helping to alleviate your shoulder pressure.

a picture shows that the logicfox chair ultra has a 3D armrest, it can adjust the rotation, fornt and back movement, and up and down adjustment
a imgae show us that the mesh fabric is breathable
All Breathable Mesh

All breathable mesh material ensures ventilation and comfort for every part of your body, including the head, back, and seat. It provides both comfort and support, promoting improved balance and circulation.

Safety certification

Rigorously tested for a wide range of weights and sizes. BIFMA certified for durability and safety, so it’ll be with you for a while.The Casters wrapped in PU material, it won't damage the floor. It effectively muffles sound, so you don't have to worry about noise when the chair slides.

a image shows us some accessories of office chair, with gas lift, wheels, heavy duty base and chassis.


it shows us the different sizes of the logicfox ergonomic chair ultra.
a image shows us the adjustment range of the ergonomic chair ultra

Box dimension 1

Gross weight 42 lbs

Assembled weight 38 lbs

Shipping box dimension 30"L x 13"W x 25"H

Chair dimension 31.5"L x 31.5"W x 46" - 49"H

Seat dimension 20.5"L x 20.5"W

Backrest dimension 20"W x 24"H

Headrest dimension 11.5"W x 7.9"-9.1"H

Seat height 17" - 20"H

Armrest height (from the floor) 25" - 31"

Caster wheel 2.36"

Number of caster wheel 5 pieces

Max.capacity 330 lbs

a image shows us the adjustment range of the ergonomic chair ultra

2.9" Adjustable armrest height

35° Adjustable rotation left and right

3" Adjustable armrest depth

1.2" Adjustable headrest height

35° Adjustable headrest rotation

1.1" Adjustable lumbar support height

45° Adjustable lumbar support rotation

2" Adjustable lumbar support front & back

3" Adjustable Gas lift height

40° Seat tilt range with 3 lockable positions

Adjustable tilt tension


Materials Polyester fabric with molded foam interior

Frame Durable nylon plastic frame with highly elastic mesh

Base & wheel Stainless steel base and nylon PU caster

Certification BIFMA Standards & SGS Certified

Assembly required Yes

Warranty 3 years

Trial 30 days

Assembling instructions View here & download

User guide View here & download


The Logicfox Ergonomic Chair Ultra features 3D armrests customizable in height, width, and angle, adapting to various body types, preventing shoulder and wrist strain, and offering superior comfort.

The thoracic support on the Logicfox Ergonomic Chair Ultra is crucial for maintaining proper spinal alignment. It supports the mid-back, ensuring the spine's natural curve is maintained, essential for preventing discomfort and promoting better posture.

The Logicfox Ergonomic Chair Ultra utilizes a mesh back and seat design, offering optimal breathability and comfort. This design ensures a cool and comfortable experience as air circulates freely, preventing heat buildup and providing comfort during extended use.

Durability is a hallmark of the Logicfox Ergonomic Chair Ultra, constructed with high-quality materials tested for long-term use. Our chair withstands the rigors of daily use, providing consistent performance and comfort over time.

The Logicfox Ergonomic Chair Ultra offers extensive adjustability, including seat height, back tilt, and lumbar support, to accommodate different body shapes and sizes. These features ensure every user finds the most comfortable, ergonomically sound sitting position.

The Logicfox Ergonomic Chair Ultra holds BIFMA and SGS certifications, ensuring compliance with international safety and durability standards. These certifications signify our commitment to providing reliable, high-quality seating solutions.

The Logicfox Ergonomic Chair Ultra comes with a 3-year warranty, covering potential manufacturing defects. This policy ensures customers receive support and solutions during this period, including repairs, replacements, or refunds.

The Logicfox Ergonomic Chair Ultra is designed for ease of assembly, including clear instructions. Our customer support team is also on standby to assist with any installation-related queries, ensuring a smooth setup process.

To facilitate the purchase of our Logicfox Ergonomic Chair Ultra, we offer convenient financing options. These plans allow you to invest in comfort and productivity now and accommodate various financial preferences with comfortable installment payments.

The BIFMA and SGS certifications held by the Logicfox Ergonomic Chair Ultra are acknowledgments of quality, safety, and durability. These globally recognized standards reflect our dedication to offering products that meet stringent industry-specific requirements.