If you’re fearful of looking a tad silly with a necklace fan around your neck in public, trust us. You’ll feel supremely silly without one—when it’s a blood-curdling 32 degrees out, and you’re at the bus stop wearing a long-sleeved top, and your bus app is saying the next bus is still 7 minutes away, and sweat is beginning to dew around your unspeakables. Ok, sorry. But you get the picture. O2COOL just wants to make your sweaty-tropical-urban life that bit more comfortable.