Your yellow swimshorts turn into an orange colored pair as soon as you step into the water. Our swimshorts change color when they get in contact with cold water.
This isn't because of the moisture, but because of the temperature of the water. As the shorts become dry the first color reveals again.
How do the swimshorts work?
The swimshorts respond to temperature changes. Therefore they need warmth and cold to change color. When the swimshorts are being worn, it is (generally) warm due to body heat and the warmth of the sun. In order to change color, the swimshorts will have to cool down. Water is generally cold so water takes care of it.
Dose the color changing effect fade over time?
It fully depends on how you use them. Due to exposure to UV light (the sun), the color change effect will decrade over time. There can come a point where the swimshorts no longer changes color. We can not say when this effect ends, it depends on the usage and severity of UV radiation. We expect that the effect will last a full season, based on average usage.
We can assure you that your swimshorts are still extremely comfortable when they do not change color anymore. The swimshorts will then have one solid color, slighty darker then the warmest color.
When the swimshorts are only being worn in indoor swimming pools (without exposure to UV light) the color changing ability will probably last a lifetime
Do not line dry the swimshorts in direct sunlight (UV-Light). This really decrades the color changing ability.
Do the swimshorts always work?
There are places in the world where the swim shorts don't change color. The water is simply too warm to cool the swimshorts down. Which sometimes reach temperatures of up to 35°C! (95 Fahrenheit).