Sullivan Insulation flask These Sullivan insulated bottle has a capacity of 750ml. The bottle is made of double-walled stainless steel. The Sullivan Insulating flask was made to hold your drink at the right temperature for a longer time so you can take the bottle on a journey. The Sullivan Insulating flask is only available in the color silver. The bottle cap is also a mug you can drink from. You can print the bottle with your own design or logo so you can use the bottle as a promotional tool. You can print your design or logo up to 4 colors. You can also engrave your logo. The bottle is free BPA produced.