This 32oz bottle has a modern powder coating and is made of durable 304 stainless steel. With innovative copper plating and double-wall insulation, it can keep cold drinks fresh for 24 hours and hot drinks warm for 12 hours. The wide opening makes it easy to clean and perfect for any situation - a true reflection of our values. This bundle includes a spout-lid, straw lid, and sponge brush for added convenience.