https://store.hermanmil
Embody
https://store.hermanmiller.com/office/office-chairs/embody-task-chair/4737.html?lang=en_US#lang=en_US&hpn=1&start=1
Aeron
https://store.hermanmiller.com/office/office-chairs/aeron-chair/2195348.html?lang=en_US
Sayl
https://store.hermanmiller.com/office/office-chairs/sayl-task-chair/2294.html?lang=en_US#lang=en_US&hpn=2&start=1
Coupon code APPLE – 30% off
Tested and works on all the above. I’m sure it works on others too