Why Union Cup? 1. High quality: Designed to last long with rust-proof materials. 2. Practical: with an internal scale to control the amount of drink (. foldable special for pour-over coffee 3. Distinctive design: combines elegance and effectiveness, with a non-slip base. 4. Eco-friendly: free of BPA and easily reusable. 5. Effective in heat retention: keeps your drink hot for up to 3 hours. 6. Personal customization: the possibility to engrave your name on the cup to make it unique.