18/8 Stainless Steel construction.
Klean Coat powder coat finish is 4X more durable than our previous finish and formulated for human and environmental health (Brushed Stainless has no coating).
Electropolished interior, a safe & non-toxic process, and rounded corners make it easy to clean.
Includes the spill proof Sport Cap 3.0. Cap is not designed to be leakproof.
Compatible With all Classic Caps, including the leak proof Loop Cap & plastic-free Bamboo Cap.