2 Inch Glow Sticks with 24 Hour Glow are a special miniature glow stick that uses a unique luminescent powder glow formulation that creates a glow effect that will last more than 24 hours! These long lasting glow sticks are ideal for night fishing, trail markers for hiking or as model, craft and hobby highlights. The 2 Inch long lasting mini glow sticks are also used as glow inserts in our fun Glowing Night Balls! These 2 Inch mini glow sticks will last a full 24 hours. To activate, just bend the 2" Glow Stick enough to break the internal capsule with the special glow powder formula. Shake well to mix and start the glow!