A writing implement (10), such a pen, has an elongate barrel (12) with a writing tip (20) at one end, and a removable cap (24) that can be fitted, for example with a snap-fit, to that end of the barrel to cover the writing tip. A tether (48) extends outside the barrel from the cap to the other end (16) of the barrel. The tether is elastic and arranged such that when the cap is removed from said one end of the barrel, the tether moves the cap to a position at or adjacent said other end of the barrel. In order to use the implement, it is therefore merely necessary for the user to dislodge or otherwise remove the cap from said one end of the barrel, and the tether will then move the cap to the other end of the barrel. Single-handed operation is possible, and the tether does, of course, prevent the cap from being mislaid.