Growler On Board-Crimson And Gray * Holds standard 1/2 gallon growlers, as well as 2L swing top style growlers with handles. * Made of low density foam making it light enough to carry with filled growlers, and retain insulation qualities similar to a can cozy. * Place on floor, trunk or seat. For extra peace of mind secure with seatbelt, although we have found it not to be necessary. * 1.4″ holes in the bottom of each cavity make for convenient drying of growlers when properly washed & rinsed.