4 oz Clear PET Boston Round Bottle with 24-410 neck finish. The Boston Round is a classic shape characterized by its rounded shoulders and base.
PET is of the polyester family and has high clarity, good chemical resistance, high impact resistance, and medium rigidity. PET is also light-weight and is used for products containing essential oils. Avoid using PET containers to store products that contain essential oils greater than 5% or fragrance oils greater than 15%.