UV bracelet

UV bracelet - best summer gift!

It's very useful and simple thing:
We apply sunblock cream on the skin and on the area of the bracelet, sensitive to ultraviolet (in center).

Then the place with cream get darkened, the action of the cream is over:apply the cream again!

Or you can just check the UV hazard: the darker the indicator, the stronger UV emitting!

Safety of being in the sun.