Stone Island likes to bring technology to its fashion lines, like the strangely compelling AirPod pockets sown into its Fall/Winter collection we saw last month. Now the fashion concern has a new sweater that changes color depending on the temperature. The garment is called Ice Knit, with an outer layer made of thermo-sensitive yarn and an inner layer of pure wool to keep you warm (and maybe keep your body from messing with the color change).