Finum Hot Glass System , 8oz Set contains one double-wall glass and one permanent tea filter. Individual packaging in 4 languages (EN, DE, FR, ES) Double wall tea cup made of borosilicate glass (heat resistant). Handmade glass shows individual nuances in thickness, height and weight. Capacity = 8 ounces Outer diameter approx. 3 in Height: approx. 3,5 in Safe for dishwasher use. Filter made of stainless-steel mesh 18/10. Heat-resistant plastic frame. Long durability and tasteless material Tea hat prevents heat-loss and retains the aroma. Serves as a handy drip-off tray for the brewing basket. International patents: US Pat: 6 161 470, JAP 21 6889/1999, DGM 298 13 791.7 <a href="https://www.amazon.com/b?node=14770868011"> International products </a> have <a href="https://www.amazon.com/gp/help/customer/display.html/ref=nav_cs_help?ie=UTF8&nodeId=202045290"> separate terms, </a> are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions. Manufacturer warranty may not apply <a href="https://www.amazon.com/b?node=14770868011">Learn more</a> about Amazon Global Store.