.Size:4.5*39mm .red,blue and mutiple colors .Glowing:5-24 hours,up to 2 years .Certification:EN71,CE,ASTM,SVHC,MSDS ... 5-24 hoursStorage life up to 2 yearsColor multiple colors orange, yellow, green, blue, purple, pink, red and availablePacking1 glow stick+ ... end: *We welcome our clients to visit our factory, ---------------------and build happy long cooperation. Up to 1 inch glow sticks for people ...