The invention concerns a bracelet or wristband of adjustable length, including: a first link including two ends defining first and second fixed points of attachment, a stopper including a through hole that allows the link to pass therethrough, releasable means for locking the link in the hole, and means for securing one of the ends of the link, and a securing element associated with the first point of attachment, the link being on one hand secured to the stopper by the second fixed point of attachment using the securing means, and on the other hand engaged in the hole so as to be able to be locked at a variable locking point, by the locking means, or to slide therein when the locking means are released, and the link further comprising, a variable point of attachment located substantially half-way between the second fixed point of attachment and the variable locking point (42).