Vase

A collapsible flower vase of waterproof sheet material, comprising:

• a base forming a closed bottom of the vase and a plurality of walls cut from a sheet of the waterproof sheet material and watertightly joined together to form the vase, the base and the walls being interconnected by watertight folds and glued together to form a watertight seal, the vase when in an erected state having an open mouth at the end opposite the base, two of the walls and the base having watertight creases, the creases being flattenable and the folds being openable on erection of the vase from a collapsed, substantially flat state to an erected state,
• an apertured stiffening member which is arrangeable within the open mouth of the vase when the vase is erected, the apertured stiffening member to hold the open mouth open, the apertured stiffening member forming an opening through which the stems of the flowers supported in the vase can extend;
• the waterproof sheet material remaining waterproof not only in the walls and the base, but also at the folds and at the creases, during initial construction of the vase, during collapse of the vase at the creases and folds and during erection of the vase, whereby the vase is unlined.