Bag for cooling the bottle. Size: 8. 5x8. 5x30 cm. Material: polyvinyl chloride, filler-gel. To cool the bottle, you must first place the bag in the freezer for 4 hours or more. It is recommended to wash in water without using detergents. Bag for cooling the bottle. Size: 8. 5x8. 5x30 cm. Material: polyvinyl chloride, filler-gel. To cool the bottle, you must first place the bag in the freezer for 4 hours or more. It is recommended to wash in water without using detergents.