HumanScale - Different Smart Chair - Ergonomic Desk Office Chair Standard chair fits more than 95% of the office population. 50 Woman to 6'4' Man. 100 to 300 pounds. Advanced Armrests. 15 Years, 24/7 Warranty 50 Woman to 6'4' Man. 100 to 300 pounds. Advanced Armrests. 15 Years, 24/7 Warranty