These clear boston round bottles are made from PET plastic and come with smooth black fine mist sprayers. The sprayers are made of polypropylene and feature clear styrene protective hoods. PET is a great packaging material that is a good barrier to gas and moisture, and also has a good resistance to heat. PET is durable and highly resistant to dilute acids, oils, and alcohols. These plastic bottles are a great packaging option for many products require application by misting.