1. When the temperature always falls within the range of less than 5.
2. When the sky threatens to snow anytime
3. When your daily journey involves standing at an unsheltered bus stop especially for potentail waiting time of more than an hour..
4. When your daily journey consists of a walk of more than 10min continuously without any shelter..
5. When your daily journey is located near a windy area..potential to develop a freeze bitting cold wind blasting at you..
Else…you will end up with super duper cold hands plus they will get drier faster…(and of course wrinkled)..