This stylish Urban Tea Tumbler contains a stainless steel precision infuser, ideal for brewing a 16 oz. cup of tea on the go. The tumbler's tea-brewing capabilities are perfected by its eco-friendly design entailing: a borosilicate glass bottle, a natural cork insulated sleeve, and stainless steel lids on both ends (for easy cleaning). *This product is: lead-free, cadmium-free, and BPA-free.