Several studies show that men and women use chairs differently. Women like to lean forward in a chair, while men prefer to lean back. Women and men have different bodies and often different work tasks. Yet most office chairs are made by men, for men.
The chair has a cushion for back support, LumbarFlex, and instead of ordinary arm rests it has supports for the elbows, which makes room for somewhat broader hips.
The chair is produced by Officeline, a Swedish company. Developing Lei took five years and cost almost 6 million SEK. The chair was available in stores from 2009.