From Wet Lubes:
Gently heats on contact and warms with motion… Blow on it, it gets warmer. Wet® Warming™ is silky smooth, long lasting, water soluble, harmless if ingested, and latex friendly. Lick it and feel the heat between your sheets! Not recommended for those with sensitive skin.
Gentle Heating Sensation
Use On the Nipples and Erogenous Zones Too