This invention relates to a collapsible container (10). More particularly, the present invention relates to a collapsible container (1 0) including a stiffener (50) for locking the collapsible container (10) in the erected condition. The collapsible container (10) is made up of a shell having a base (26) and sidewalls extending therefrom, wherein at least two opposing sidewalls (30A, 30B) are collapsible through the incorporation there into of fold lines (36) enabling the respective sidewalls (30A, 30B) to fold onto themselves in a collapsed condition. The collapsible container (10) is retainable in an erected condition through stiffeners (50) engageable with each of the collapsible sidewalls (30A, 30B), such that the stiffener (50) is slideably engageable with the sidewalls (30A, 30B) between locked and unlocked condition. In the locked condition, the respective sidewalls (30A, 30B) and consequentially the collapsible container (10) are locked in the erected condition with the stiffener (50) spanning across
