These bulk neon party glow stick are made with durable and flexible plastic and can be used as regular or twisted glow bars on glow necklaces and bracelets.After activation, these cool glow sticks will be at their brightest for 8-10 hours, then slowly fade away. If the sticks don't crack / activate, you can keep them long enough until your next party. Glow lasts longer in cold weather, it is brighter when hot. by using glow bars on your hands and fashion on rings to use with bottles Soda like makeshift ring tossing games at backyard carnivals and birthday parties.