Can Ant-Man change size without the suit?

Can Ant-Man change size without the suit? In the first Ant-Man, Hank Pym explained that the special suit and helmet were required to contain the Pym particles in order to vary the person’s size. But in Ant-Man and the Wasp, people change the size of cars and buildings without the suit.

In the first Ant-Man, Hank Pym explained that the special suit and helmet were required to contain the Pym particles in order to vary the person’s size. But in Ant-Man and the Wasp, people change the size of cars and buildings without the suit.