A protective cap (1) is proposed for an end of an elongate member (6), such as a male connecting end of a pipe or tube. The cap (1) comprises a sheath of flexible, resilient (i.e. elastic) material (2) to cover part of the outer surface of the member (6) at an end of the member. The protective cap (1) can be applied to the end of the member by unfurling at least part of the sheath 3 from a gathered configuration, such as a rolled-up configuration. The protective cap (1) includes resilient ridges (8) extending inwardly from an insert member (2), and/or a chip at least partly within the cap.