Get unparalleled strength and environmental friendliness with The Stanley Tumbler 40 oz. Made with 90% recycled stainless steel and equipped with double-wall vacuum insulation, this tumbler maintains hot or cold temperatures for extended periods. The FlowState™ lid and ergonomic handle provide effortless sipping, while the reusable straw included reduces plastic waste. Suitable for any journey, it's the sole tumbler you'll ever require!