Which characteristics are relevant and must be considered when choosing a educational robotics kit? Kits for educational robotics are, in their essence, composed by hardware, software and pedagogic resources aiming at easing its adoption in classrooms. However, we have to consider the different demands of each context as well as the different characteristics of each kit. Taking that into account, this work presents and analises three educational robotics kits under many aspects, such as hardware finishing, available pedagogic resources, among others. Besides emphasizing and contrasting the kits, other contribution of this paper is to provide information in the decision making process of which kit must be considered in real classrooms contexts.