Durable and heat resistant borosilicate glass. Glass is microwave and dishwasher safe. The double wall will help maintain the temperature of it’s contents for longer. Can also be used for cold food and beverages and can be pre-chilled in the fridge or freezer. Use for serving deserts and appetisers for eye catching presentation. Size – 220ml – 10.2cm x 6.8cm How to use: Preheat your glass with boiling water, discard water. Add your freshly brewed tea or coffee. Sip and enjoy!