Abstract: A heat shielding sleeve defining a limb placement zone and including an installed position encapsulating a user's limb and an uninstalled position removed from a user's limb. The heat shielding sleeve further comprises an elastic or semi-elastic outer layer operably configured to enclose a user's leg and a secondary layer defined by a plurality of raised members wherein the secondary layer and the plurality of raised members are comprised of a thermally insulating material. The secondary layer further defines a plurality of exhaust apertures designed to provide thermal venting of the user's skin. The heat shielding sleeve is designed to protect motorcycle riders' and passengers' lower limbs from burns caused when riders and passengers come into physical contact with a motorcycle's exhaust pipes or the gas emissions emanating therefrom, while providing a comfortable and breathable garment sleeve that may be operably adjusted to the comfort of the user.