[It's mint-infused, that being one of the few flavors that humans and Hork-Bajir can appreciate at similar strengths and concentrations. ...Of course that does make it a cooling drink. Outside of the wall it's just as hot as the city had been before the weather spells.]

I'd expect that they would radiate heat and make it worse for you at temperatures like this. If you like, I can enchant a small item to protect you from cold. It might not work well in a much colder environment, but for these circumstances, it could make you more comfortable.

[Toby's herself in a personal bubble of faint warmth. She's endothermic, she creates her own body heat, but she also doesn't have much insulation. Since she also doesn't sweat, both extremes of temperature would give her pause.]