This paper presents a Wearer-Centered Framework (WCF) developed to support designing for good wearability in animal biotelemetry. Firstly, we describe the framework and the systematic process followed to develop it. Then, we report on how the WCF was evaluated with three teams of designers, who used it collaboratively to design a catcentered tracking collar during dedicated workshops. We discuss our analysis of the designers' dialogues, whose aim was to understand the extent to which the framework informed the designers' thinking. Our findings indicate that the WCF was a useful tool to support the systematic elicitation of wearability requirements. They also suggest that designers could be provided with additional tools to support the WCF's application more effectively.