Beautifully designed, steep and sip your favorite teas anywhere, anytime. This tumbler cup is equipped with a removable infuser basket and a convenient opening that prevents leaks or spills. this Stainless Steel Tumbler With Bag makes brewing loose tea on-the-go simple and convenient! The innovative design allows you to brew tea (whether loose leaf tea or a tea bag) and stop the infusion process without having to remove the tea from the mug, preventing over-steeping! Keep your tea hot for hours with this tumbler. It is spill-proof and leak-resistant. Your beverage will stay hot for longer! Enjoy your tea on the go, in style! Experience the brilliance of this Stainless Steel Tumbler With Bag, Wit double wall design, so that keeps drinks hot or cold for up to six hours. Easy to brew your tea on the go.