The 100 ml, 150 ml, and 300 ml Boston round bottles are made of PET.

100 ml, 150 ml, and 300 ml Boston round bottles are made of PET that is famous for its resilient, light-weight, high gloss, and corrosion-resistant quality.
The PET bottles can be used for lotions, toners, moisturizing gel, essential oil, cleanser, conditioner, and many more.