Hydro Flask Car Cupholder Adapter

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This adapter is designed specifically for 32 and 40-ounce Hydro Flask bottles, fitting securely in its major ID. Other sizes, except the 64-ounce wide, True Pint, and food sizes, fit in the next smaller step down. The open bottom allows most paper cups and the Hydro Flask True Pint to be used simultaneously with the adapter in a standard car cup holder. Updates include revised models from Solidworks (2015), STL, and Parasolids, as well as a vented version. Recent improvements ensure perfect-fit diameters for 18-ounce and 40-ounce wide mouth flasks when printed with an Afinia printer at a 0.3mm layer height. A cross-section screenshot is also available.