The GSI Outdoors Cascadian Mug is lightweight, polypropylene dinnerware that is non-leaching and BPA-Free. Cascadian is the recyclable, inexpensive answer to all your outdoor dining needs. Cascadian's lightweight, flexible material is easy to pack, stack and carry. Chemically-inert and BPA-Free, Cascadian pieces remain resilient in both hot and temperatures and are also extremely durable. Moreover, Cascadian pieces won't absorb food odors like other plastics and are completely recyclable at the end of their service life. Plus, they float!