A head mounted display (HMD) adapted to disperse weight from a display unit of the HMD, the HMD comprising: a main body configured to support the display unit and configured to mount on a head of a user; characterised in that it comprises: a support mechanism , connected to the display unit and the main body, comprising a contact member configured to contact the head of the user when the HMD is mounted on the head of the user, operably coupled to an elastic member in turn configured to: have a first length when the HMD is not mounted on the head of the user such that a first biasing force is applied; and have a second length larger than the first length when the HMD is mounted on the head of the user such that the weight of the display unit is dispersed by applying a second biasing force, which is greater than the first biasing force, with a force component in the vertical direction to the display unit, and wherein the contact member being arranged to move forward along the user's head as the HMD is pulled down onto the head of the user, extending the length of the elastic member forward; and wherein the elastic member is a constant load spring. a main body configured to support the display unit and configured to mount on a head of a user; characterised in that it comprises: a support mechanism , connected to the display unit and the main body, comprising a contact member configured to contact the head of the user when the HMD is mounted on the head of the user, operably coupled to an elastic member in turn configured to: have a first length when the HMD is not mounted on the head of the user such that a first biasing force is applied; and have a second length larger than the first length when the HMD is mounted on the head of the user such that the weight of the display unit is dispersed by applying a second biasing force, which is greater than the first biasing force, with a force component in the vertical direction to the display unit, and wherein the contact member being arranged to move forward along the user's head as the HMD is pulled down onto the head of the user, extending the length of the elastic member forward; and wherein the elastic member is a constant load spring. a support mechanism , connected to the display unit and the main body, comprising a contact member configured to contact the head of the user when the HMD is mounted on the head of the user, operably coupled to an elastic member in turn configured to: have a first length when the HMD is not mounted on the head of the user such that a first biasing force is applied; and have a second length larger than the first length when the HMD is mounted on the head of the user such that the weight of the display unit is dispersed by applying a second biasing force, which is greater than the first biasing force, with a force component in the vertical direction to the display unit, and wherein have a first length when the HMD is not mounted on the head of the user such that a first biasing force is applied; and have a second length larger than the first length when the HMD is mounted on the head of the user such that the weight of the display unit is dispersed by applying a second biasing force, which is greater than the first biasing force, with a force component in the vertical direction to the display unit, and wherein the contact member being arranged to move forward along the user's head as the HMD is pulled down onto the head of the user, extending the length of the elastic member forward; and wherein the elastic member is a constant load spring. <EOS>