This Tritan water bottle is here to keep you hydrated and save the earth from plastic polution. Thanks to its corn starch construction, this bottle is biodegradable and will not linger in the environment unlike its plastic counterparts. Available in two sizes, each bottle comes with a screw-on, spill-resistant lid with straw for a mess-free sipping experience. .: Materials: biodegradable tritan (bottle), polypropylene, acrylonitrile, polyethylene (lid and straw) .: Available in two sizes .: BPA-free .: Grey spill-resistant lid and clear mouthpiece .: Personalizable to perfection