GO TEAM! To activate your Light Up Foam Finger, locate the red dot near the giant pinky and press down to activate the THREE light functions: Fast Flash, Slow Flash, Steady Light. LED Color: Blue Dimensions (W x H): 9.65″ x 18″ Comes ready to use, batteries are not replaceable.

More choices of colors here:

Number One Foam Light Up Finger Multicolor
Number One Foam Light Up Finger White
Number One Foam Light Up Finger Green
Number One Foam Light Up Finger Red