This vacuum insulated, 18/8 stainless steel mug is designed for an easy and enjoyable drinking experience. It's sturdy enough for any adventure while preserving the taste and aroma of your beverage. The copper-coated double wall construction maintains the optimal temperature for cold drinks (up to 24 hours) and hot beverages (up to 4 hours), and prevents the outer wall from sweating. The Helia mug includes a durable glass straw and a cleaning brush to reduce plastic waste. SIGG products prioritize sustainability and food safety, being recyclable and free from harmful chemicals like BPA. General Information: Height: 25.5 cm (450ml) / 30.0 cm (600ml) Diameter: 8.8 cm Weight: 290 g (450ml) / 340 g (600ml) Ideal for smoothies, coffee, iced tea, or cocktails. This stylish tumbler with a straw and lid fits most cupholders and is suitable for travel, car use, or garden parties. All parts, including the shatterproof glass straw with a removable silicone mouthpiece, are BPA and pollutant-free. The wide opening allows for easy hand cleaning with warm water and a sponge. The scope of delivery includes the Sigg Helia Tumbler Night Ink 18/8 Stainless Steel 0.45 L, insulated mug with straw-cleaning brush, BPA and pollutant-free. Handwash is recommended.