This 40 oz tumbler is expertly crafted from durable stainless steel complete with a sturdy BPA-free lid ensuring both safety and longevity. Designed to keep your beverages hot for up to 6 hours and cold for 6 to 12 hours it offers exceptional thermal efficiency. The tumbler comes with a convenient handle for easy carrying making it perfect for on-the-go use whether youre heading to work or embarking on a weekend adventure.