The cheap Chinese glow bracelets you find elsewhere are 5mm thick and not all that bright, plus they only last a couple of hours. These North-American made glow bracelets are a nice thick 6mm that results in 44% more glow for your money. Glows up to 6 hours. Comes in full tubes of 50 8" bracelets in a single color, with connectors. Choose from red, blue, or green.