A securement device includes a retainer having at least one retention member extending into a channel of the retainer. The retention member is coupled to the retainer and includes a distal end. The distal end is movable relative to the retainer. The retention member can extend from the body and/or supports of the retainer on opposite sides of the channel axis. In some embodiments, a first set of retention members extends from a first support and a second set of retention members extends from the other support. The first set and the second set of retention members can be staggered laterally along the channel axis such that the lateral sides of the retainer are asymmetric which allow the same retainer to secure medical article having different shapes and sizes. The retainer may further include one or more abutment features or pills configured to contact the medical article.