An eyewear comprising a frame with lens and temples mounted to the frame. Each of the temples comprises a branch having a proximal end, a distal end and an internal wall defining an aperture extending longitudinally along the branch. The internal wall has a first curved portion with a first curvature, the first curved portion being made of a flexible material. Each of the temples further comprises a member slidably moveable in the aperture, the member having a second curved portion with a second curvature, the second curved portion registering with the first curved portion, the second curvature being greater than the first curvature such that movement of the member along the aperture and towards the distal end of the branch displaces the branch from a first position in which a first pressure is applied to a side of a wearer's head to a second position in which a second pressure is applied to the side of the wearer's head, the second pressure being greater than the first pressure.