i just received an order i made for those 1.5 inch glowsticks from Glow Universe. i sampled 10 glowsticks from 2 different packs (5 per pack) and they are very thin and glow bright for only 15 min. and then glow really dull afterwards. i will call them and try to send back the remainder for a refund on monday. dont know if anyone else has ordered them but the ones i received are GARBAGE! also they are not what they are pictured as online, very, very thin!