The Lifeventure Flip-Top Thermal Mug features a secure, easy-to-clean hinged flip lid opening so you can seal it back up safely after each sip, for hydration on the go.Vacuum insulated to keep drinks hot or cold (can keep liquid piping hot for up to 3 hours)High quality stainless steel construction, durable matt finish300ml capacity with easy-to-clean flip-top lid (lid goes back 180°)Conforms to British StandardsCapacity: 300ml Weight: 262g Dimensions: 164 x 70 x 70mm Base Diameter: 68mm