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. Most of the silione bracelets are of no meanings , people wear it just as a popular jewellery. After proper dewatering , the silica gel mSiO2?nH2O become a porous mass that is of different particle size. This is so called the silicone. The silicone has the open vesicular structure , large specific surface. So it can absorb many substances as a good desiccant, adsorbent and catalyst carrier. Adsorption of the silicone is mainly the physical one that can be regenerated and good for repeated use. Let the silica gel soak in the cobalt dichloride solution then get it dried and activated , will become the allochroic silica gel. It will transfer from blue to red color when absorb water. Changes in color shows the degree of water absorption and whether need the regeneration treatment. ver the world . Silicone bracelets are used in all kinds of entertainment venues and stadiums . They can be used as gifts, souvenirs, promotional products , etc . They are hot fashion ornament . They are also a kind of low-cost , high-efficiency advertising promotional gifts. Most of the silicone bracelets have no practical use . They are just fashion accessories . The words or expressions on the silicone bracelets usually reflect the beliefs and values of the wearer . When we wear silicone bracelets for a long time, they get dirty . How to Clean silicone wristband ? There are some ways . 1.Clean water . After the ssilicone bracelet becomes dirty , the simplest and most effective way is to rinse it with clean water . &nbsnike silicone wristbandsp; 2.Toothpaste . If the silicone hand ring is accidentally stained or greasy , it can be washed with a wet toothbrush dipped in toothpaste , then rinsed with clean water , and then wiped with napkins or soft cloth . 3.Bath lotion and laundry detergentnike silicone wristbands: Apply the liquid to the place directly where it needs to be cleaned, then rinse it off with clean water after full friction .