Leak Proof Glass Travel Coffee Mug Travel Sipper with Lid, Coffee Cup with Silicone Sleeve , BPA Free , Microwave Safe, Durable – Capacity 320 ML – Pack of 2. The glass coffee mug is made of durable glass. The thermal silicone sleeve and PP lid are food grade and BPA free. It is free of toxins and chemicals, it will not stain the taste of your coffee. Your Daily Glass Mug Lightweight, durable, hygienic and simple, our everyday mug is ideal for your home, office or on the go, and perfect for your hot or cold drink, your coffee, milk and tea. It can fit a car’s coffee machine and cup holder.