Now available in a 50 ounce size, this insulated stainless steel tumbler combines functionality and design into a high quality travel tumbler. The Trek Tumbler keeps drinks ice cold for 24+ hours and has an insulated leak-resistant lid designed with the quarter turn technology fo multiple sip positions. Easily drink left or right handed and still use the ergonomic handle designed for a comfortable hold. Perfect for all-day hydration, this tumbler is there for the long haul.