Last full 12 hours, each light stick is individually wrapped. Phthalate Free. Phthalate has been baned in some states. Great for power outage, camping, emergencies & disaster preparedness kits.
amazon.com - $10.77
UPDATE: This is cool toy for all ages - great for camping, rave parties and waving in the dark :) If you are not going to use already glowing stick for a while - just put it in the freezer to save its chemical energy and use it next day.
