@ONCE (pronounced 'at once') is a value priced but higher than average build quality of ergonomic, conference and executive seating. What separates @ONCE from the pack is that all of their designs are built to a weight specification standard of 300 lbs. Most commercial seating is only 250 lbs. and some brands less that that. It's an important point when shopping for any kind of chair, be it ergonomic, task or executive. The more robust the structure, the longer the life cycle of the product.