Thermo-sensitive sweaters change color in the cold

The sweaters, available in yellow-to-orange, emerald-to-military-green and ivory-to-anthracite, are only available via Stone Island’s mobile app between September 11th and September 13th. They’ve got an interesting heat-map look, for sure (especially the yellow and orange sweater), which could make for some enthralling conversations if you wear one out into the colder weather this fall. social …