The all new eCycle? collection is designed to help keep you and the earth happy. eCycle? tumblers are made from eCycle? Polypropylene, a proprietary custom formulated food grade 100% recycled polypropylene material with 25% post-consumer recycled content. eCycle? material is formulated and tested to match FDA food safety material standards. These promotional tumblers also feature a twist-off lid and double wall construction. Have your name attached these great personalized tumblers for a green theme to your promotion.