Can be worn alone, but works best as an outer layer to the earlyWinter_s7 glove. For maximum warmth use the insulatorGlove L1 as your 'base' layer, the earlyWinter_s7 glove as your second and then the shellGlove_s7 on top! Great to wear when just starting out on your ride to beat the early morning frost and then fit easily into your back pocket when you warm up.