1.5 inch 24 Hour Glow mini glowstick is a special miniature light stick that uses a unique luminescent powder glow formulation that creates a bright glow 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. Long lasting mini glow sticks are also used as glow inserts in our fun glowing badminton birdies! These 1.5 inch mini glow sticks will last a full 24 hours without dimming or losing intensity. To activate, just bend the 1 and a half inch Light Stick enough to break the internal capsule with the special glow powder formula. Shake well to mix and start the glow!