The study is carried out at the Active with kids design department at Thule. Thule is a company with many different products but is relatively new in the stroller industry with its first stroller ready in 2016. It is important for the customers and Thule that the strollers do not wobble. Therefore, the aim of the work is to find guidelines to avoid wobbling in future product development of strollers.The study begins with interpreting the problem and formulating questions that should lead to a solution to the problem in the end. After that, research is carried out on the internet and interviews, but also investigations of twelve strollers provided by Thule. This gives us a picture of important data and the existing market. The study continues with delimitations for example that the tests will be performed on flat surfaces, this is necessary in order to reach an optimal result in a limited time. Studies are carried out on other wobbling contexts for different substrates for increased understanding of the problem and possible solutions.The project then moves into the development of a test-prototype where desired parameters can be reviewed and later analyzed. Through the use of cad and additive manufacturing, the prototype is produced which is tested on a treadmill. The stroller is filmed with a camera in order to later be analyzed. The next step is to draw graphs from parameters studied against the frequency of oscillation. From the graphs, guidelines can be formed where the size of the parameters' influence on each other provides a guide for the early stage of product development in future development projects.In summary, the work has resulted in conclusions on some parameters that is presented, on some of the parameters no conclusions have been able to be provided, where further investigation is required. The presented conclusions have resulted in guidelines for Thule's employees regarding what they should consider when designing new strollers in order to minimize wobbling in the strollers that are manufactured. The report also presents some points that require further studies that can be focused on to provide a broader understanding of the problems with wobbling.