Contemporary ath-leisure brand, Boy Meets Girl, is creating an Earth Day campaign made in collaboration with Cool Effect, a nonprofit that funds carbon reducing projects around the world. The brand will be selling limited-edition T-shirts for $42 featuring the phrase “Thou Shalt Stay Cool” to promote Cool Effect’s cause. Fifteen percent of proceeds will be distributed among Cool Effect’s projects, which include grassland protection in the Great Plains and renewable wind turbine energy in Costa Rica.