A case of 24 one litre clear PET plastic bottles, with 24 caps.
Each 1 litre bottle is designed to withstand pressure. These are typically used to make sparkling Elderflower fizz or homemade sparkling cider, any homebrew drink in fact that creates pressure inside the bottle. PET bottles are ideal for this because, as the pressure inside the bottle builds, the plastic becomes tight. You can then 'burp' each bottle occasionally and reseal, to avoid explosions when you open them.
24 one litre bottles are contained in the box, along with 24 plastic screw caps. The colour of the caps may vary (green or gold for example), though all the caps in your pack will be the same as each other.
Reusable, these bottles and caps can be sterilised too.