18/8 Stainless Steel construction.
No paint, ink, coatings, or plastic.
Electropolished interior, a safe & non-toxic process, and rounded corners make it easy to clean.
Includes the leak proof Bamboo Cap to create all stainless interior.
Compatible with all Classic Caps, including the spill proof Sport Cap 3.0.
Dishwasher safe, hand washing recommended for Bamboo Cap.
Backed by the lifetime Strong as Steel guarantee.