1: Neoprene material 2: 3 colors , black / blue /red 3: can keedp warmer 2-3 hours ... 4: Can change any LOGO ,,,,OEM Factory , manufcturer , sell , wholesale , promotion !! 1: Neoprene material2: 3 colors , black / blue /red3: can keedp warmer 2-3 hours ...4: Can change any LOGO ,,,,OEM