Double Walled Glass Infusion Bottle - Premium Fruit, Tea, Water and Coffee Infuser Tumbler with No Leak Bamboo Lid (Small - 300ml) Keep your Tea warm without burning your hand with this double glass wall. Comes with a Basket Filter, it's easy to insert and remove, comes with handles so you don't burn yourself - Dishwasher and microwave safe (Bottle only) Stay Chic and Classy this winter! Don't settle for the cheap plastic tea infuser which can leak toxins into your drink. Brew-as-you-go: Infuser holds 300ml (10oz), 350 ml (12 oz), or 450ml (15oz) so it's ideal for transportation.