To use this Stretch Armstrong toy, simply grab his arms, legs, or torso and pull or twist them. You'll be amazed as he stretches almost four times his normal size and then returns to his original shape. When you're done playing, just leave him alone and he'll go back to normal. There aren't any special batteries or parts to worry about. As for maintenance, keep him away from sharp objects that could tear his stretchy material. Also, don't expose him to extreme heat as it might damage his ability to stretch properly. Just have fun stretching and playing with this cool little toy!