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Spare AquaCores™

An AquaCore™ is the unique thermal core you find inside your Hottle. 

While proper heating and care of your Hottle will allow your Hottle to last for years, we also know that accidents happen. If you've overheated your Hottle's thermal core or accidentally punctured it, you can order a spare AquaCore™ and slip it inside the Hottle cover you already have.

Interested in making a homemade heating pad, but don't want to use rice, flax or other flammable grains? We encourage DIY-ers to make their own Hottles using our safer AquaCores™. Make your own cover with a fabric and pattern of your choosing, and place the AquaCore™ inside for a homemade heating pad!