Using these Heroes Of Goo Jit Zu Rainbow Friends action figures is easy. Just pick them up and start stretching. You can stretch the Green and Blue figures up to three times their size. When you're done stretching, they'll go back to their original shape. For a more hands - on experience, squeeze the Blue figure to feel the squishy water - bead filling. Remember, don't pull too hard or use sharp objects on the figures, as this could damage the goo filling. To keep these toys in good condition, store them in a cool and dry place. Avoid exposing them to extreme heat or cold, as this might affect the stretchy material and the goo filling. Have fun playing with your Rainbow Friends action figures!