KAPPA: KAPPA KS604 HAND WARMER https://www.kappamoto.com/Various-accessories/Accessories/KS604?utm_source=KAPPA&utm_campaign=NL&utm_medium=mailing&utm_content=KS604 Cold while riding? It's your fault! The new KS604 heated muffs will make winter go away! The heat, adjustable in 3 levels, is produced in a few minutes. The perfect universal accessory not to give up the bike during the cold season. Installation is simple and does not require the removal of the handlebar, connecting them to the KAPPA POWER HUB kit via the usb port.