Hulk as the youngest children know him from the Disney Junior series Spidey and his Amazing Friends: a friendly face, green arms and purple trousers. At around 23 cm this version is a good deal bigger than the ordinary figures in the range, and that is the whole point of it.
It is a figure without batteries, buttons or sound. Head and arms turn, and with that you set him down however you like: ready to stomp, or simply upright beside the other heroes. For a preschooler that plain role-play is exactly what counts.
The size helps. Small hands get a good grip on him, and no loose accessories come with him to get lost. The box states from 3 years. He is sold separately, so he simply joins the Spidey figures already in the house.
A good present for a toddler or preschooler who follows the series, and cheap enough to give as an extra rather than as the main present.
