General information only
This site does not provide medical diagnosis or treatment, individual ergonomic assessment, occupational-health advice, engineering certification, legal advice, or a guarantee that a chair will fit or be safe.
Health and discomfort
A chair may affect comfort, but persistent or worsening pain, numbness, weakness, or other symptoms should be discussed with a qualified health professional. Do not rely on a chair purchase to diagnose or treat a condition.
Product information
Specifications, standards, warranties, availability, materials, prices, and return policies can change. Confirm the exact model and configuration with the manufacturer or seller.
Safety
Follow assembly, use, inspection, maintenance, and load instructions. Stop using a chair when structural or mechanism safety is uncertain.