Customized UV Silicone Wristband , ultraviolet ray sensor wristbands.
white bands bacome to purple wristbands quikly once meeting ultraviolet rays.
1. SIZE:  usually the sizes are 202(190,180,160)*12*2mm . we can make the bands any size you need.
2, Colors:white bands will change to purple color at sunlight.
3.Pricing: 0.15-0.12/pc. mould cost is us$ 30-50. freight from our factory to your country is excluded
4. shipping: usually we choose UPS, DHL, FEDEX,or EMS.