Now you can lie out in the sun all you want and not worry about getting burned—as long as you listen to your bikini.

A Canadian company has invented a bikini that has a belt alarm that beeps when it’s time to head for the shade. The alarm has a meter that displays a level of UV intensity from 0 to 20. You can set the alarm yourself, based on your skin type and sun sensitivity.

Most people have a sensitivity of 3 to 7. Those who shouldn’t stay out too long measure up at 8 to 10. If you have a score of 11 or higher, you probably should wear this bikini only indoors.

The company, Solestrom, is selling these bikinis for US$190.