The iconic Lifeventure thermal mug is now available with an integrated flip-top lid designed specifically for adventurers on the move. The top features a hinged flip lid opening which is both secure and easy to clean. The flip-top mugs have the same 300ml capacity and vacuum-insulated walls as the standard thermal mugs. Please ensure liquid is cool enough to drink before consumption; insulation can keep liquid piping hot for up to 3 hours. TiV high performance thermally-induced vacuum. 300ml capacity with easy to clean flip-top lid. Keeps drinks hot for 3 hours or cold for 7 hours.