Abstract: The disclosure herein describes a collapsible flower vase that includes an elongated sleeve member made of flexible material, a pair of collars having a given shape, each having a structure adapted to engage a corresponding edge of the sleeve member to form a rigid assembly having a shape corresponding to that of the collars, and a flexible water-tight bag received within the rigid assembly and secured between one of the collars and an edge of the sleeve member. The sleeve member has rigidity along its longitudinal axis and flexibility in a direction perpendicular to the longitudinal axis.