Although some of the the item pictures show smaller kids in the advertisement, these types of foam light sticks are typically used in parties/events for teens and adults.
These come neatly packaged with each stick individually wrapped. Each stick has a tab you need to pull out before it will work. The small button will turn the lights on/off and cycle through various light patterns: flashing, slow cycle, etc. Lights are bright even in daylight. Great product!