EVA can provide some arch support, but it may not be sufficient for everyone.
EVA insoles can be designed with different levels of rigidity and thickness to provide varying degrees of arch support, depending on the needs of the individual. Some EVA insoles are made with raised arch supports and deep heel cups to provide additional support and stability.
However, if you have a foot condition that requires significant arch support, such as flat feet or plantar fasciitis, you may need to look for more specialized orthotic insoles that offer greater support and control than EVA. It is important to consult with a healthcare professional or podiatrist to determine what kind of insole will work best for your specific needs.