The SPIbelt was invented by Kim Overton as she started to ponder how to best carry her keys and other essentials when running. Fast-paced product development resulted in the SPIbelt being introduced to the public at the Austin marathon in 2007.The SPIbelt was invented by Kim Overton as she started to ponder how to best carry her keys and other essentials when running. Fast-paced product development resulted in the SPIbelt being introduced to the public at the Austin marathon in 2007.