Are you a bike commuter? Do you ride even when it's cold? Then these bicycle helmet ear warmers might be just what you need. These ear covers are made here at The Fiber Rhythm Studio. Knit with wool or wool-blend yarns, these ear covers are designed to fit around your helmet straps to cover your ears. They have straps that will tie into the helmet structure so that they stay in place covering your ears. The outside is reflective, helping you be seen at night. The inside is wool. The two layers help keep you extra warm.