The 40oz stainless steel tumbler is durable, easy to clean and unbreakable. Rust-free, the outside is treated with colorful powder coating, super easy to grip and non-slip. The stainless steel tumbler uses a double-layer vacuum insulated body that slows the transfer of heat to the outside of the mug. This means the insulated coffee mug will keep your favorite drinks cold or piping hot for hours.
