A head-mounted-display adjustment apparatus may include a telescoping assembly. The telescoping assembly may include (1) a track, (2) a boss element that bears upon the track and that is loosely coupled to the track such that the boss element is liftable from the track by a limited distance, and (3) a slide that moves along the track, the slide including a catch that restrains the slide from moving along the track when the boss element bears upon the track. The adjustment apparatus may also include a strap with a distal section coupled to the head-mounted display and a proximal section coupled to the slide such that the strap is extendable, via movement of the slide, away from the head-mounted display.