the strength of the uv index. So some uv silicone bracelets made as the indication with the ruler of levels of index. Wearing on the wrist to avoid long time staying under strong uv. So what makes it uv transfer ? The answer is the UV phosphor which usd uv energy to open the sensitive molecular bond and make it jump from low energy to high energy level There will be a change from visible light to visible light, resulting in the changing color from light to dark. It become a uv silicone bracelet when the UV phosphor is put into the silicone mass and produce it a band. Different color of the bracelet has different meanings. Band color white stand for making poverty history. Yellow stand for livestrong. Black and white stand for standing up and speaking up. Blue stand for beatting bullying. Pink stand for supporting knowledge strength. Blue and white stand for one world one cause Blue and green stand for say no to sectarianism. Also a silicone bracelet can be used as a promotional item for entertainment or sport. It is hot sale as a advertisement gift. nd makes people full of infinite hope for healthy life and vitality of life; green ribbon implies love; light and fluttering green ribbon symbolizes happiness and joy, which is the endless source for us to realize the value of life and create a better life. Green is peace! It"s the color of olive branches in the Athens flame. We can make a meaninful green with our own design. We provide wristbands with most affordable price. Using coupon SAVE10, we offer 10% dicount cheap custom lanyardsfor the total price. Besides, order less than 100pcscheap custom lanyards, get 50pcs free and 5pcs keychains free. Order 100pcs or more, get 100pcs free and 10pcs keychains free. All the free wristbands and keychains are same design of the one you order. No extra cost, no MOQ. Event one pcs we can make. We are online 24 hours 7 days. You can contact us via email, phone call or live chat. We are appreciated that we can send us inquiry with design detail. All the ditital proofs are free, no matter you order or now.