CroakiesFloater Eyewear Retainer Now you can ensure the safety of your frames while on the water. Thesefloating eyewear retainers are basically a life vest for your valuables- just secure a Croakies floating retainer to your glasses to keep them afloat. The Float Collection is made with bright, beacon colors to help you track your valuables. Croakies floating retainers come in a variety of styles and Croakies Floatation Factor (CFF) levels. The CFF allows customers to easily determine the amount of floatation they need to save their glasses or keys from sinking.