How big are arctic bumblebees?

Arctic bumblebees, specifically the species Bombus polaris, are relatively small compared to other bumblebee species, typically measuring about 1 to 2 centimeters in length. They have a robust body covered in dense, furry hairs, which helps them retain heat in cold environments. Their size and adaptations allow them to thrive in harsh Arctic conditions, where they play a crucial role in pollinating plants during the short growing season.