Package include 4 pcs of slow-rising jumbo squishies; every kid would love these cute squishies and get days of enjoyment and fun from them! Mr. Pen jumbo squishies are made of polyurethane foam (PU foam) and are soft and comfortable to touch with no pungent smell. They slowly rise when you press them. When you feel upset or angry, give a big squeeze. It will be a good way to help you vent your emotion; it's also effective for getting focused and deep thought.