PostureFit SL back support technology flexes to support the lumbar and base of the spine, encouraging a more active posture and reducing muscle fatigue.
Design Details
![PostureFit SL back support technology flexes to support the lumbar and base of the spine, encouraging a more active posture and reducing muscle fatigue.](http://www.hermanmiller.hk/cdn/shop/files/aeron_detail_3_310x414_crop_center.png?v=1699348398)
01
![Select the best fit for your body from three chair sizes, designed to fit a range of users.](http://www.hermanmiller.hk/cdn/shop/files/aeron_detail_2_700x414_crop_center.png?v=1699348469)
02
Select the best fit for your body from three chair sizes, designed to fit a range of users.
![Eight zones of varying tension within the back and seat eliminate circulation-restricting pressure points.](http://www.hermanmiller.hk/cdn/shop/files/aeron_detail_1_310x414_crop_center.png?v=1699348484)
03
Eight zones of varying tension within the back and seat eliminate circulation-restricting pressure points.
![Unique tilt mechanism moves the sitter smoothly through a full range of postures.](http://www.hermanmiller.hk/cdn/shop/files/aeron_detail_4_700x414_crop_center.png?v=1699348532)
04
Unique tilt mechanism moves the sitter smoothly through a full range of postures.
![8Z Pellicle material allows body heat to pass through the seat and backrest.](http://www.hermanmiller.hk/cdn/shop/files/aeron_detail_5_310x414_crop_center.png?v=1699348552)
05
8Z Pellicle material allows body heat to pass through the seat and backrest.
![Composed of recycled materials, Aeron helps divert plastic waste from the ocean.](http://www.hermanmiller.hk/cdn/shop/files/aeron_detail_6_310x414_crop_center.png?v=1699348588)
06
Composed of recycled materials, Aeron helps divert plastic waste from the ocean.
Inspirations
![Aeron office chair revolutionized office seating with its defining design qualities: the pioneering Pellicle suspension material and its patented PostureFit SL back support, which affords the ideal sit — chest open, shoulders back, pelvis tilted slightly forward.](http://www.hermanmiller.hk/cdn/shop/files/aeron_lifestyle_01.png?height=1125&v=1699348934&width=2000)
![Aeron office chair revolutionized office seating with its defining design qualities: the pioneering Pellicle suspension material and its patented PostureFit SL back support, which affords the ideal sit — chest open, shoulders back, pelvis tilted slightly forward.](http://www.hermanmiller.hk/cdn/shop/files/aeron_lifestyle_02.png?height=1125&v=1699348938&width=2000)
![Aeron office chair revolutionized office seating with its defining design qualities: the pioneering Pellicle suspension material and its patented PostureFit SL back support, which affords the ideal sit — chest open, shoulders back, pelvis tilted slightly forward.](http://www.hermanmiller.hk/cdn/shop/files/aeron_lifestyle_03.png?height=1125&v=1699348951&width=2000)
![Aeron office chair revolutionized office seating with its defining design qualities: the pioneering Pellicle suspension material and its patented PostureFit SL back support, which affords the ideal sit — chest open, shoulders back, pelvis tilted slightly forward.](http://www.hermanmiller.hk/cdn/shop/files/aeron_lifestyle_04.png?height=1125&v=1699348986&width=2000)
![Aeron office chair revolutionized office seating with its defining design qualities: the pioneering Pellicle suspension material and its patented PostureFit SL back support, which affords the ideal sit — chest open, shoulders back, pelvis tilted slightly forward.](http://www.hermanmiller.hk/cdn/shop/files/aeron_lifestyle_05_acc56f62-bd4f-4b15-b793-9056277a3820.png?height=1125&v=1699348996&width=2000)
![Aeron office chair revolutionized office seating with its defining design qualities: the pioneering Pellicle suspension material and its patented PostureFit SL back support, which affords the ideal sit — chest open, shoulders back, pelvis tilted slightly forward.](http://www.hermanmiller.hk/cdn/shop/files/aeron_lifestyle_06.png?height=1125&v=1699349025&width=2000)
Learn How to Adjust
![](http://www.hermanmiller.hk/cdn/shop/files/HM_AER_ArmAdjustments_16x9_h264_jpg_5f3d6aae-ea43-4f50-b1c4-aa19e756d24a.png?height=1080&v=1699349668&width=1920)
PostureFit SL
Reach behind you to the back of the chair and turn the knob on the PostureFit SL device forward until you feel comfortable and supported.
![](http://www.hermanmiller.hk/cdn/shop/files/HM_AER_ArmAdjustments_16x9_h264_jpg_bdb2afa8-753f-4a18-97b1-ea096b396406.png?height=1080&v=1699349675&width=1920)
Forward Tilt
To position the chair forward, lean back and rotate the knob beneath the seat on the left side forward. For a reclined posture, lean back in the chair and rotate the lever back all the way.
![](http://www.hermanmiller.hk/cdn/shop/files/HM_AER_ArmAdjustments_16x9_h264_jpg_842bf226-b0c7-4890-a03e-24efe5aa130f.png?height=1080&v=1699349767&width=1920)
Tilt Tension
Reach beneath the chair and grab the knob with a long stem on the right side. To increase the tension, sit in the chair and turn the knob forward. To decrease the tension, turn the knob backward.
![](http://www.hermanmiller.hk/cdn/shop/files/HM_AER_ArmAdjustments_16x9_h264_jpg_5d7eb319-3b55-4944-af1c-aacdd5fc144d.png?height=1080&v=1699349799&width=1920)
Arm Adjustments
Pull the arms up when you want support; place them at their lowest setting when you’d rather they slide under your desk; pull them in when you want a cushion; or move them to the side if they’re in the way.
![](http://www.hermanmiller.hk/cdn/shop/files/HM_AER_ArmAdjustments_16x9_h264_jpg_09d8d731-6e1b-47d9-81a0-27e99120b778.png?height=1080&v=1699349877&width=1920)
Seat Height
Move the seat up or down until your feet are flat on the floor, giving you an anchor point.
![](http://www.hermanmiller.hk/cdn/shop/files/adjusting_Aeron_1280x720_f98c360d-a123-4d19-a1ac-1d12ad0216c1.jpg?height=720&v=1699349408&width=1280)
Adjusting Aeron
![](http://www.hermanmiller.hk/cdn/shop/files/adjusting_Aeron_1280x720_07f059e4-e12a-4abd-8f8d-05f03bb153d1.jpg?height=720&v=1699349514&width=1280)
Adjusting Aeron Chair (中)
![](http://www.hermanmiller.hk/cdn/shop/files/HM_AeronOBPAugust2021_Full_16x9_C.png?height=1080&v=1699350437&width=1920)
The Best, Now Better for Earth
Decades ago, Aeron changed the perception of what an office chair could do. Now meet the next generation of Aeron, made with ocean-bound plastic. It’s the exact same chair, just a little more sustainable.
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