Product size (W x D x H): 4.1 x 3.5 x 10.4 inches (10.5 x 9 x 26.5 Cold Retention (after 6 hours): Less than 17.6°F (8°C) Heat Retention (24 hours/6 hours): 54°C/79°C and above The "fluorine coat" is easy to fall off with no color or odor Easy to fill with ice cubes with a wide opening of approximately 2.0 inches (5 cm) Easy to clean (fully washable) Lightweight and compact