Problems encountered by parents using infant and convertible child restraints with babies from birth through three months are described, and design features of these restraints are evaluated in terms of parental convenience and infant comfort. Parents were loaned four different restraints over the three-month period and were interviewed concerning each restraint's convenience, comfort, perceived safety, and other factors related to its usability under real trip conditions. At the end of the period, parents selected a restraint to keep. General likes and dislikes are summarized, comments about particular design features are noted, final choices are analyzed, and suggestions for improvement are described. The study concludes that child restraint design features do affect use, even with highly motivated parents, and that information about restraint usability under various circumstances needs to be disseminated.