A container comprising a body portion, a collapsible shoulder portion and an outlet aperture arranged on said collapsible shoulder portion , in which said collapsible shoulder portion comprises a base connected to said body portion, a top at which said outlet aperture is positioned and a central portion which tapers inwardly from said base to said top, in which said collapsible shoulder portion is collapsible from a start configuration in which said outlet aperture is aligned with a longitudinal axis of said container, to a collapsed configuration in which said outlet aperture is rotated from said axis , in which said collapsible shoulder portion comprises a bracing section , being an area of said central portion which is shaped and configured to support said collapsible shoulder portion against collapse when said outlet aperture is subjected to a first force applied in line with said axis by transmitting said first force from said top to said base, in which said collapsible shoulder portion comprises a structurally weakened section which is shaped and configured to fail in a non-resilient manner when subjected to a second force applied from an offset angle to said axis , in which said structurally weakened section comprises a discontinuity area formed in an outer surface of said central portion which extends both axially and circumferentially of said central portion and comprises an outline which surrounds said axis , characterised in that said outline comprises a first section which extends substantially 180 degrees around said axis at a constant first radial distance therefrom, and a second section which extends substantially 180 degrees around said axis at varying radial distances therefrom which are less than said first radial distance. in which said collapsible shoulder portion comprises a base connected to said body portion, a top at which said outlet aperture is positioned and a central portion which tapers inwardly from said base to said top, in which said collapsible shoulder portion is collapsible from a start configuration in which said outlet aperture is aligned with a longitudinal axis of said container, to a collapsed configuration in which said outlet aperture is rotated from said axis , in which said collapsible shoulder portion comprises a bracing section , being an area of said central portion which is shaped and configured to support said collapsible shoulder portion against collapse when said outlet aperture is subjected to a first force applied in line with said axis by transmitting said first force from said top to said base, in which said collapsible shoulder portion comprises a structurally weakened section which is shaped and configured to fail in a non-resilient manner when subjected to a second force applied from an offset angle to said axis , in which said structurally weakened section comprises a discontinuity area formed in an outer surface of said central portion which extends both axially and circumferentially of said central portion and comprises an outline which surrounds said axis , characterised in that said outline comprises a first section which extends substantially 180 degrees around said axis at a constant first radial distance therefrom, and a second section which extends substantially 180 degrees around said axis at varying radial distances therefrom which are less than said first radial distance. <EOS>